مُسْنَدُ أَحْمَدَ
Musnad Ahmad 3413
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) used to prostrate in [Soorat) Sad.
Musnad Ahmad 3436A saheeh hadeeth; this is a da’eef isnad]