The Book of Prayers (Kitab Al-Salat)

Muslim :: Book 4 : Hadith 2002

Umm Salama reported Allah's Messenger (may peace be upon him) as saying: Whenever you visit the sick or the dead, supplicate for good because angels say" Amen" to whatever you say. She added: When Abu Salama died, I went to the Apostle of Allah (may peace be upon him) and said: Messenger of Allah, Abu Salama has died. He told me to recite:" O Allah! forgive me and him (Abu Salama) and give me a better substitute than he." So I said (this), and Allah gave me in exchange Muhammad, who is better for me than him (Abu Salama).

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star