Hadith 8:3039
Abu Bakr narrated to us, he said: Mu'adh narrated to us, from Ibn 'Awn, from Muhammad, he said: They used to consider that the most knowledgeable of people regarding the rites [of Hajj] was Ibn 'Affan, then after him, Ibn 'Umar.
حدثنا أبو بكر قال نا معاذ عن بن عون عن محمد قال كانوا يرون أن أعلم الناس بالمناسك بن عفان ثم بعده بن عمر