مُسْنَدُ أَحْمَدَ
Musnad Ahmad 1893
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn "Abbas that Abu Bakr urged the Prophet (ﷺ) to do something by swearing an oath, and the Prophet (ﷺ) said to him: “Do not swear oaths.”
Musnad Ahmad 1894Sahih (Darussalam) [ al-Bukhari (7046) and Muslim (2269)]