´Ibn Al-Mughirah bin Shu'bah narrated from his father:` "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."
Hadith Referenceسنن ترمذي / كتاب الطهارة عن رسول الله صلى الله عليه وسلم / 100
Hadith Gradingالألبانی:صحيح، صحيح أبي داود (137 - 138)
´Abu Ubaidah bin Muttammad bin Ammar bin Yasir said:` "I asked Jabir bin Abdullah about wiping over the Khuff. He said, 'O my nephew! It is the Sunnah.'" [He said:] "And I asked him about wiping over the lmamah. He said, '[Wipe1 the hair [with water].'"
Hadith Referenceسنن ترمذي / كتاب الطهارة عن رسول الله صلى الله عليه وسلم / 102