Sayyiduna Abu Qirsafah (may Allah be pleased with him) narrates: When we pledged allegiance to the Prophet (peace and blessings be upon him) - I, my mother and my maternal aunt pledged allegiance - and we came back from him, my mother and my maternal aunt said to me: O my son! We have never seen anyone like this man, anyone more beautiful of face than him, or wearing cleaner clothes than him, or softer in speech than him; we saw as though light was coming out of his mouth.
Imam al-Tabarani recorded it; its chain contains narrators whom I do not know.