Sa’d bin Hisham narrates: He presented himself before Sayyida Aisha (may Allah be pleased with her) and said: Tell me about the character of the Prophet (peace be upon him). Sayyida Aisha (may Allah be pleased with her) replied: Have you not recited the Qur’an? I replied: Yes, I have. She said: The character of the Prophet (peace be upon him) was the Qur’an. The narrator says: I intended that now I should get up and not ask her about anything else. But I said: O Mother of the Believers! Tell me about the night prayer of the Prophet (peace be upon him). Sayyida Aisha (may Allah be pleased with her) replied: Have you not recited this Surah:“O you who wraps himself [in a garment] ”? I replied: Yes, I have. Sayyida Aisha (may Allah be pleased with her) said: In the beginning of this Surah, Allah made the night prayer obligatory. The Prophet (peace be upon him) and his companions performed the night prayer for a year until their feet became swollen. Allah kept the concluding part of this Surah withheld in the heavens for twelve months, then Allah revealed the command of concession at the end of this Surah, so the night prayer became voluntary, which was previously obligatory.