The month most liked by the Messenger of Allah (saws) for fasting was Sha'ban. He then joined it with Ramadan.

She never saw the Prophet (saws) fasting the whole month except Sha'ban which he combined with Ramadan.

Sometimes I missed some days of Ramadan, but could not fast in lieu of them except in the month of Sha'ban." Said Yahya, a sub-narrator, "She used to be busy serving the Prophet ."

This hadith is narrated on the authority of Yahya b. Sa'id with the same chain of transmitters but with this variation that he said that ('A'isha did not observe fast but in Sha'ban) out of regard for the Messenger of Allah (may peace be upon him).

Allah's Apostle said, "The month (can be) 29 nights (i.e. days), and do not fast till you see the moon, and if the sky is overcast, then complete Sha'ban as thirty days."

The Prophet or Abul-Qasim said, "Start fasting on seeing the crescent (of Ramadan), and give up fasting on seeing the crescent (of Shawwal), and if the sky is overcast (and you cannot see it), complete thirty days of Sha'ban."

The Messenger of Allah (saws) used to count the days in Sha'ban in a manner he did not count any other month; then he fasted when he sighted the new moon of Ramadan; but if the weather was cloudy he counted thirty days and then fasted.

Allah's Apostle mentioned Ramadan and said, "Do not fast unless you see the crescent (of Ramadan), and do not give up fasting till you see the crescent (of Shawwal), but if the sky is overcast (if you cannot see it), then act on estimation (i.e. count Sha'ban as 30 days).

The Prophet (saws) gave a sermon during his hajj and said: Time has completed a cycle and assumed the form of the day when Allah created the heavens and the earth. The year contains twelve months of which four are sacred, three of them consecutive, viz. Dhul-Qa'dah, Dhul-Hijjah and Muharram and also Rajab of Mudar which comes between Jumadah and Sha'ban.

Allah's Apostle used to fast till one would say that he would never stop fasting, and he would abandon fasting till one would say that he would never fast. I never saw Allah's Apostle fasting for a whole month except the month of Ramadan, and did not see him fasting in any month more than in the month of Sha'ban.

The Prophet said, "Time has come back to its original state which it had when Allah created the Heavens and the Earth; the year is twelve months, four of which are sacred. Three of them are in succession; Dhul-Qa'da, Dhul-Hijja and Al-Muharram, and (the fourth being) Rajab Mudar (named after the tribe of Mudar as they used to respect this month) which stands between Jumad (ath-thani) and Sha'ban."

'A'isha, the Mother of the Believers (Allah be pleased with her), reported that the Messenger of Allah (may peace be upon him) used to fast (so continuously) that we said that he would not break, and did not fast at all till we said that he would not fast. And I did not see the Messenger of Allah (may peace be upon him) completing the fast of a month, but that of Ramadan, and I did not see him fasting more in any other month than that of Sha'ban.

The Prophet never fasted in any month more than in the month of Sha'ban. He used to say, "Do those deeds which you can do easily, as Allah will not get tired (of giving rewards) till you get bored and tired (of performing religious deeds)." The most beloved prayer to the Prophet was the one that was done regularly (throughout the life) even if it were little. And whenever the Prophet offered a prayer he used to offer it regularly .

AbdulAziz ibn Muhammad said: Abbad ibn Kathir came to Medina and went to the assembly of al-Ala'. He caught hold of his hand and made him stand and said: O Allah, he narrates a tradition from his father on the authority of AbuHurayrah who reported the Messenger of Allah (saws) as saying: When the middle of Sha'ban comes, do not fast. Al-Ala' said: O Allah, my father narrated this tradition on the authority of AbuHurayrah from the Prophet (saws)

That the Prophet asked him (Imran) or asked a man and `Imran was listening, "O Abu so-and-so! Have you fasted the last days of this month?" (The narrator thought that he said, "the month of Ramadan"). The man replied, "No, O Allah's Apostle!" The Prophet said to him, "When you finish your fasting (of Ramadan) fast two days (in Shawwal)." Through another series of narrators `Imran said, "The Prophet said, '(Have you fasted) the last days of Sha'ban?"

The Prophet (saws) said: The month consists of twenty-nine days, but do not fast till you sight it (the moon) and do not break your fast till you sight it. If the weather is cloudy, calculate it thirty days. When the twenty-ninth of Sha'ban came, Ibn Umar would send someone (who tried) to sight the moon for him. If it was sighted, then well and good; in case it was not sighted, and there was no cloud and dust before him (on the horizon), he would not keep fast the next day. If there appeared (on the horizon) before him cloud or dust, he would fast the following day. Ibn Umar would end his fasting alone with the people, and did not follow this calculation.

The Prophet said, "Time has come back to its original state which it had on the day Allah created the Heavens and the Earth. The year is twelve months, four of which are sacred, three of them are in succession, namely Dhul-Qa'da, Dhul Hijja and Muharram, (the fourth being) Rajab Mudar which is between Juma'da (ath-thamj and Sha'ban. The Prophet then asked, "Which month is this?" We said, "Allah and his Apostle know better." He kept silent so long that we thought that he would call it by a name other than its real name. He said, "Isn't it the month of Dhul-Hijja?" We said, "Yes." He said, "Which town is this?" We said, "Allah and His Apostle know better." He kept silent so long that we thought that he would call it t,y a name other than its real name. He said, "isn't it the town (of Mecca)?" We replied, "Yes." He said, "What day is today?" We replied, "Allah and His Apostle know better." He kept silent so long that we thought that he would call it by a name other than its real name. He said, "Isn't it the day of Nahr?" We replied, "Yes." He then said, "Your blood, properties and honor are as sacred to one another as this day of yours in this town of yours in this month of yours. You will meet your Lord, and He will ask you about your deeds. Beware! Do not go astray after me by cutting the necks of each other. It is incumbent upon those who are present to convey this message to those who are absent, for some of those to whom it is conveyed may comprehend it better than some of those who have heard it directly." (Muhammad, the sub-narrator, on mentioning this used to say: The Prophet then said, "No doubt! Haven't I delivered (Allah's) Message (to you)? Haven't I delivered Allah's message (to you)?"

The Prophet said, "Time has come back to its original state which it had when Allah created the Heavens and the Earth, the year is twelve months, of which four are sacred; (and out of these four) three are in succession, namely, Dhul-Qa'da, Dhul-Hijja and Muharram, and (the fourth one) Rajab Mudar which is between Jumad (Ath-Tham) and Sha'ban." The Prophet then asked us, "Which month is this?" We said, "Allah and His Apostle know (it) better." He kept quiet so long that we thought he might call it by another name. Then he said, "Isn't it Dhul-Hijja?" We said, "Yes." He asked "What town is this?" We said, "Allah and His Apostle know (it) better.' Then he kept quiet so long that we thought he might call it by another name. He then said, "Isn't it the (forbidden) town (Mecca)?" We said, "Yes." He asked, "What is the day today?" We said, "Allah and His Apostle know (it) better. Then he kept quiet so long that we thought that he might call it by another name. Then he said, "Isn't it the Day of An-Nahr (slaughtering of sacrifices)?" We said, "Yes." Then he said, "Your blood (lives), your properties," (the sub narrator Muhammad, said: I think he also said): "..and your honor) are as sacred to one another like the sanctity of this Day of yours, in this town of yours, in this month of yours. You shall meet your Lord and He will ask you about your deeds. Beware! Don't go astray after me by striking the necks of one another. Lo! It is incumbent upon those who are present to inform it to those who are absent for perhaps the informed one might comprehend it (understand it) better than some of the present audience." Whenever the sub-narrator Muhammad mentioned that statement, he would say, "The Prophet said the truth.") And then the Prophet added, "No doubt! Haven't I conveyed Allah's Message to you! No doubt! Haven't I conveyed Allah's Message to you?"

The Prophet said, "Time has taken its original shape which it had when Allah created the Heavens and the Earth. The year is of twelve months, four of which are sacred, and out of these (four) three are in succession, i.e. Dhul-Qa'da, Dhul-Hijja and Al-Muharram, and the fourth is Rajab which is named after the Mudar tribe, between (the month of) Jumaida (ath-thania) and Sha'ban." Then the Prophet asked, "Which is this month?" We said, "Allah and His Apostle know better." On that the Prophet kept quiet so long that we thought that he might name it with another name. Then the Prophet said, "Isn't it the month of Dhul-Hijja?" We replied, "Yes." Then he said, "Which town is this?" "We replied, "Allah and His Apostle know better." On that he kept quiet so long that we thought that he might name it with another name. Then he said, "Isn't it the town of Mecca?" We replied, "Yes, " Then he said, "Which day is today?" We replied, "Allah and His Apostle know better." He kept quiet so long that we thought that he might name it with another name. Then he said, "Isn't it the day of An- Nahr (i.e. sacrifice)?" We replied, "Yes." He said, "So your blood, your properties, (The sub-narrator Muhammad said, 'I think the Prophet also said: And your honor..) are sacred to one another like the sanctity of this day of yours, in this city of yours, in this month of yours; and surely, you will meet your Lord, and He will ask you about your deeds. Beware! Do not become infidels after me, cutting the throats of one another. It is incumbent on those who are present to convey this message (of mine) to those who are absent. May be that some of those to whom it will be conveyed will understand it better than those who have actually heard it." (The sub-narrator, Muhammad, on remembering that narration, used to say, "Muhammad spoke the truth!") He (i.e. Prophet) then added twice, "No doubt! Haven't I conveyed (Allah's Message) to you?"