Musnad Ahmad 1260:3

Muhammad ibn Mus'ab narrated to us, he said: Al-Awza'i narrated to us, from 'Abd al-Karim al-Jazari, he said: Someone who heard Ibn 'Abbas say narrated to me: Dubba'ah narrated to me that she said: "O Messenger of Allah, I intend to perform Hajj." He said to her: "Perform Hajj and make a condition."