مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2960
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas (رضي الله عنه) said: The Prophet (ﷺ) was ordered to prostrate on seven. Shu'bah said: On another occasion he narrated it to me and said: "I have been commanded to prostrate and not to tuck up my hair or garment.”
Musnad Ahmad 2983Its isnad is saheeh, al-Bukhari (809) and Muslim (490)]