مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2292
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn 'Abbas (رضي الله عنه) said: I have been commanded to prostrate on seven and not to tuck up my hair or garment. Then on one occasion he said: Your Prophet (ﷺ) was commanded to prostrate on seven and not to tuck up his hair or garment.
Musnad Ahmad 2300Its isnad is saheeh, al-Bukhari (809) and Muslim (490)]