Musnad Ahmad 1156:115

Ya'qub narrated to us, he said: My father narrated to me, from Ibn Ishaq, he said: Abu 'Ubaydah ibn 'Abdullah ibn Zam'ah narrated to me, from his mother Zaynab bint Abi Salamah, and from his father 'Abdullah ibn Zam'ah, from Umm Salamah, the wife of the Prophet, may Allah bless him and grant him peace, she said: "It was my night in which the Messenger of Allah, may Allah bless him and grant him peace, would come to me." Then he mentioned the meaning of the hadith of Ibn Abi 'Adi. Abu 'Ubaydah said: "Does this trace (athar) not confirm for you the departure of the Messenger of Allah, may Allah bless him and grant him peace, on that day of his before evening fell?"