Musnad Ahmad 1156:149

'Abd al-Razzaq narrated to us, he said: Sufyan informed us, from al-A'mash, from Abu Wa'il, who said: 'Abd al-Rahman ibn 'Awf entered upon Umm Salamah, and she said to him: "I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: 'Indeed, among my companions are those who will not see me after I depart from them.'" He said: So he went to 'Umar and mentioned that to him. He said: So 'Umar came to her and said: "I adjure you by Allah, am I among them?" She said: "O Allah, no, and I will not clear anyone after you."