Narrator
Sa'd reported Allah's Apostle
Sahih Muslim #5894The Book of Poetry
Sa'd reported Allah's Apostle (ﷺ) as saying: It is better for the belly of any one of you to be stuffed with pus rather than to stuff (one's mind) with poetry.
Sahih Muslim #6221The Book of the Merits of the Companions
Sa'd reported Allah's Apostle (ﷺ) as saying to 'Ali: Aren't you satisfied with being unto me what Aaron was unto Moses?