مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2739
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas (رضي الله عنه) said: When the Prophet (ﷺ) conquered Makkah, he stayed there for seventeen days, praying two rak'ahs (in the obligatory prayers that are four rak'ahs for one who is not travelling).
Musnad Ahmad 2758A saheeh hadeeth; this is a da'eef isnad]