Musnad Abu Ya'la al-Mawsili 129:88

'Abd al-A'la narrated to us, Mu'tamir narrated to us, he said: I heard Humayd narrating from Anas, from the Prophet (may Allah bless him and grant him peace), and I was at his right or left thigh: "I have responded to Your call with 'Umrah and Hajj."