The Messenger of Allah said: "Whoever catches one Rak'ah of the 'Asr before the sun sets, then he has caught it, and whoever catches one Rak'ah of the Subh before the sun rises, then he has caught it."

The Prophet (SAW) was more particular about offering the two (optional) Rak'at at dawn than he was about offering any of the other optional prayers. [Agreed upon].

“Mu’adh bin Jabal Al-Ansari led his companions in the ‘Isha’ prayer and he made it long. A man among us went away and prayed by himself. Mu’adh was told about that and he said: ‘He is a hypocrite.’ When the man heard about that, he went to the Messenger of Allah (saw) and told him what Mu’adh had said to him. The Prophet (saw) said: ‘Do you want to be a cause of Fitnah (trial, tribulation), O Mu’adh? When you lead the people in prayer, recite “By the sun and its brightness,”[Ash-Shams 91] and “Glorify the Name of your Lord the Most High,” [Al-A’la 87] and “By the night as it envelopes,” [Al-Lail 92] and “Recite in the Name of your Lord.’”[Al-‘Alaq]

A woman came to the Prophet (saws) while we were with him.

She said: Messenger of Allah, my husband, Safwan ibn al-Mu'attal, beats me when I pray, and makes me break my fast when I keep a fast, and he does not offer the dawn prayer until the sun rises.

He asked Safwan, who was present, about what she had said. He replied: Messenger of Allah, as for her statement "he beats me when I pray", she recites two surahs (during prayer) and I have prohibited her (to do so).

He (the Prophet) said: If one surah is recited (during prayer), that is sufficient for the people.

(Safwan continued:) As regards her saying "he makes me break my fast," she dotes on fasting; I am a young man, I cannot restrain myself.

The Messenger of Allah (saws) said on that day: A woman should not fast except with the permission of her husband.

(Safwan said:) As for her statement that I do not pray until the sun rises, we are a people belonging to a class, and that (our profession of supplying water) is already known about us. We do not awake until the sun rises. He said: When you awake, offer your prayer.