Sayyiduna Sa'd bin Abi Waqqas (may Allah be pleased with him) narrates: It was said to the Prophet (peace and blessings be upon him): "So-and-so of Thaqif has been killed, and he had become a Muslim." The Prophet (peace and blessings be upon him) said: "May Allah Almighty keep him far away, for he used to hate Quraysh."
Imam al-Bazzar recorded this narration, and its chain contains a narrator whom I do not know.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 16460