Musnad Abu Ya'la al-Mawsili 163:9

Yazid ibn Abi Habib said: The Messenger of Allah (peace and blessings of Allah be upon him) attended the funeral of a man. When it was placed for him to pray over it, he caught sight of a woman and asked about her. It was said to him, "She is the sister of the deceased, O Messenger of Allah." He said to her, "Go back," and he did not pray over it until she had disappeared from sight. Yazid said: Umm Salamah had attended [the funeral of] Abu Salamah.