The Peak of Eloquence · Hadith 1270 (#Passage #79)
Chapter 22 | To his governor in Basra
ومن كتاب له (عليه السلام) إلى عبد الله بن العباس، وكان ابن عباس يقول «ما انتفعت بكلام بعد كلام رسول الله (صلى الله عليه وآله) كانتفاعي بهذا الكلام»
To ‘Abdullāh ibn al-‘Abbās. ‘Abdullāh ibn al-‘Abbās used to say, ‘‘Apart from the Prophet’s sayings I did not derive greater benefit from any saying than this one.’’
Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).