Abu Dawud said: I heard Ahmad say: "Ibn Abi 'Arubah narrated it in Mursal form". Meaning from Qatadah.
In-book : Book 11, Hadith 117
English translation : Book 10, Hadith 1833
11. 'The Rites of Hajj (Kitab Al-Manasik Wa''l-Hajj)'
باب الْمُحْرِمِ يَحْتَجِمُ