Sunan Ibn Majah
3760
Sahih+3

It was narrated from Sad bin Abu Waqas that the Prophet(ﷺ) said:"If a man were to fill his stomach completely with pus until it destroyed him, that would be better for him than filling (his mind) with poetry

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi