'Abdullah b. Umar (Allah be pleased with both of them) reported Allah's Measenger (may peace be upon him) as saying:
| Reference | : Sahih Muslim 1080g |
| In-book reference | : Book 13, Hadith 10 |
| USC-MSA web (English) reference | : Book 6, Hadith 2369 |
| (deprecated numbering scheme) |
Abu Huraira (Allah be pleased with him) narrated that the Messenger of Allah (may peace he upon him) made a mention of the new moon and (in this connection) said:
| Reference | : Sahih Muslim 1081d |
| In-book reference | : Book 13, Hadith 23 |
| USC-MSA web (English) reference | : Book 6, Hadith 2381 |
| (deprecated numbering scheme) |
Narrated Ibn `Umar:
I heard Allah's Apostle saying, "When you see the crescent (of the month of Ramadan), start fasting, and when you see the crescent (of the month of Shawwal), stop fasting; and if the sky is overcast (and you can't see it) then regard the month of Ramadan as of 30 days."
| Reference | : Sahih al-Bukhari 1900 |
| In-book reference | : Book 30, Hadith 10 |
| USC-MSA web (English) reference | : Vol. 3, Book 31, Hadith 124 |
| (deprecated numbering scheme) |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan an-Nasa'i 2123 |
| In-book reference | : Book 22, Hadith 34 |
| English translation | : Vol. 3, Book 22, Hadith 2125 |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan an-Nasa'i 2138 |
| In-book reference | : Book 22, Hadith 49 |
| English translation | : Vol. 3, Book 22, Hadith 2140 |
| Sunnah.com reference | : Book 5, Hadith 3 |
| English translation | : Book 5, Hadith 673 |
| Arabic reference | : Book 5, Hadith 652 |
| Arabic reference | : Book 4, Hadith 1642 |
| Arabic reference | : Book 3, Hadith 8822 |
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying:
| Reference | : Sahih Muslim 1081a |
| In-book reference | : Book 13, Hadith 20 |
| USC-MSA web (English) reference | : Book 6, Hadith 2378 |
| (deprecated numbering scheme) |
| Arabic reference | : Book 13, Hadith 2411 |
| Arabic reference | : Book 14, Hadith 3441 |
| Arabic reference | : Book 13, Hadith 2429 |
| Arabic reference | : Book 5, Hadith 1798 |
'Abdullah b. 'Umar (Allah be pleased with both of them) reported Allah's Messenger (may peace be upon him) as saying:
| Reference | : Sahih Muslim 1080f |
| In-book reference | : Book 13, Hadith 9 |
| USC-MSA web (English) reference | : Book 6, Hadith 2368 |
| (deprecated numbering scheme) |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan an-Nasa'i 2119 |
| In-book reference | : Book 22, Hadith 30 |
| English translation | : Vol. 3, Book 22, Hadith 2121 |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan an-Nasa'i 2125 |
| In-book reference | : Book 22, Hadith 36 |
| English translation | : Vol. 3, Book 22, Hadith 2127 |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan an-Nasa'i 2120 |
| In-book reference | : Book 22, Hadith 31 |
| English translation | : Vol. 3, Book 22, Hadith 2122 |
| Arabic reference | : Book 11, Hadith 1914 |
| Arabic reference | : Book 11, Hadith 1913 |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan Ibn Majah 1655 |
| In-book reference | : Book 7, Hadith 18 |
| English translation | : Vol. 1, Book 7, Hadith 1655 |
| Arabic reference | : Book 9, Hadith 7113 |
| Arabic reference | : Book 9, Hadith 7111 |
| Arabic reference | : Book 9, Hadith 7109 |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan an-Nasa'i 2128 |
| In-book reference | : Book 22, Hadith 39 |
| English translation | : Vol. 3, Book 22, Hadith 2130 |
| Arabic reference | : Book 3, Hadith 7327 |
| Arabic reference | : Book 3, Hadith 7561 |
| Arabic reference | : Book 16, Hadith 1468 |
| Arabic reference | : Book 13, Hadith 2410 |
| Arabic reference | : Book 9, Hadith 7110 |
| Arabic reference | : Book 5, Hadith 1797 |
| Arabic reference | : Book 11, Hadith 1904 |
| Grade: | Sahih (Darussalam) |
| Reference | : Sunan Ibn Majah 1654 |
| In-book reference | : Book 7, Hadith 17 |
| English translation | : Vol. 1, Book 7, Hadith 1654 |
| Arabic reference | : Book 14, Hadith 3443 |
| Arabic reference | : Book 13, Hadith 2416 |
| Arabic reference | : Book 3, Hadith 7333 |
| Arabic reference | : Book 13, Hadith 2419 |
| Arabic reference | : Book 13, Hadith 2414 |
| Arabic reference | : Book 3, Hadith 7330 |
| Arabic reference | : Book 3, Hadith 7322 |
| Arabic reference | : Book 3, Hadith 7341 |
| Arabic reference | : Book 3, Hadith 7350 |
| Arabic reference | : Book 9, Hadith 7139 |
| Arabic reference | : Book 3, Hadith 9245 |
| Arabic reference | : Book 9, Hadith 7137 |
| Arabic reference | : Book 3, Hadith 8827 |
| Arabic reference | : Book 3, Hadith 7377 |
| Arabic reference | : Book 9, Hadith 7127 |
| Arabic reference | : Book 2, Hadith 1294 |
| Arabic reference | : Book 34, Hadith 33880 |
| Arabic reference | : Book 64, Hadith 10319 |