This is well known from Mālik and from others (1) among the scholars, such as Abū Ubayd al-Qāsim ibn Sallām. It was likewise mentioned by Abū Hakīm al-Nahrawānī, one of Ahmad’s disciples, and by other jurists.
He also narrated from al-Hasan ibn Umārah, from al-Hakam (2), from Miqsam, from Ibn Abbās [—may Allah be pleased with them both—] (3), who said: “Allah commanded that forgiveness be sought for the Prophet’s Companions—may Allah bless him and grant him peace—while knowing that they would fight one another.”
Urwah said (4): “Āishah [may Allah be pleased with her] (5) said to me, ‘My nephew, (6) they were commanded to seek forgiveness for the Companions of Muhammad (7)—may Allah bless him and grant him peace—but instead they reviled them.’” (8)
In the two Sahīhs, it is narrated from Abū Saīd al-Khudrī [may Allah be pleased with him] (9) that he reported the following: