Bakr bin 'Abdullah al-Mazni بكر بن عبد الله المزني · The Book on Purification

"The Prophet performed Wudu and wiped over the Khuff and 'Imamah." Abu Bakr (one of the narrators) said: "And indeed I heard it from Ibn Al Mughirah."

the Prophet met him while he was Junub. He said: " I withdrew - to perform Ghusl. Then he returned, so he said: 'Where have you been?' Or: 'Where did you go?' I replied: 'I was Junub.' So he said: 'Indeed the believer is not defiled.'''