It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she said: The Messenger of Allah (peace and blessings be upon him) said: "When you are present with a sick person or a deceased person, say good things, for the angels say Amin to what you say." Then when Abu Salamah died, I came to the Prophet (peace and blessings be upon him) and said: O Messenger of Allah! Abu Salamah has died. He (peace and blessings be upon him) said: "Say: O Allah, forgive me and him, and grant me a good replacement in his place." I did so, and Allah granted me one better than him: Muhammad (peace and blessings be upon him).
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 20242