"He (that is Umayya b. Abu Salt) was about to become a Muslim", and in the hadith transmitted on the authority of Ibn Mahdi (the words are) "He was almost a Muslim in his poetry."
Sahih Muslim Book 41, Hadith 2
← Previous Hadith One day when I rode behind Allah's Messenger (ﷺ), he said (to me): Do you remember any poetry of Umayya b. Abu Salt. I said: Yes. He said: Then go on. I recited a couplet, and he said: Go on. Then I again recited a couplet and he said: Go on. I recited one hundred couplets (of his poetry). This hadith has been reported on the authority of Sharid through another chain of transmitters but with a slight variation of wording.

Sahih Muslim Book 41, Hadith 1 Next Hadith → The truest word spoken by an Arab (pre-Islamic) in poetry is this verse of Labid: "Behold! apart from Allah everything is vain."

Sahih Muslim Book 41, Hadith 3