Haytham bin Abu Sinan reported,

He heard Abu Hurayrah, in his storytelling, mention that the Prophet ﷺ said, "A brother of yours speaks no obscenity," referring by that to Ibn Rawahah, who said,"Among us is the Messenger of Allah ﷺ, reciting His Book when the radiant light of dawn breaks forth. He showed us guidance after blindness, so our hearts are certain that what he says will come to pass. He keeps his side away from his bed when the resting places weigh heavy upon the disbelievers."

Azami 14581

Sahih

عن الهيثم بن أبي سنان

أنه سمع أبا هريرة في قصصه، يذكر النبي ﷺ يقول: إن أخا لكم لا يقول الرفث يعني بذاك ابن رواحة، قال: وفينا رسول الله ﷺ يتلو كتابه إذا انشق معروف من الفجر ساطع أرانا الهدى بعد العمى فقلوبنا به موقنات أن ما قال واقع يبيت يجافي جنبه عن فراشه إذا استثقلت بالكافرين المضاجع.

الأعظمي 14581صحيح
Contents
Reference
Commentary
Ayat
Collection
Jami al-Kamil
Book
Superior moral conduct
Chapter
Etiquette of speech, words, and correspondence
Section
Good speech, poetry, rajaz, and huda
Numbering
Jami al-Kamil 14581 (2nd edition)
Azami 14581