Sahih Muslim | Book 6 | Hadith Number 2550

Narrated by Yahya b. Sa'id
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 ('Aisha did not observe fast but in Sha'ban) out of regard for the Messenger of Allah (may peace be upon him). (In another version, the words are): "Yahya said: I think it was due to the regard for the Apostle of Allah (may peace be upon him).