Musannaf Ibn Abi Shayba 3:4791

Shababa ibn Sawwar narrated to us, he said: Shu'bah narrated to us, from Nu'aym ibn Abi Hind, from Abu Wa'il, from Masruq, from 'Aishah, she said: The Messenger of Allah (may Allah bless him and grant him peace) prayed during his illness in which he died behind Abu Bakr, while sitting.