مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1938
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
"Ubaidullah narrated that he heard Ibn "Abbas say: I am one of those whom the Prophet (ﷺ) sent on ahead with the weak ones of his family on the night of Muzdalifah.
Musnad Ahmad 1939Sahih (Darussalam) [ al-Bukhari (1856) and Muslim (1293)]