Sunan At-Tirmidhi

Umm Salamah narrated:""The Messenger of Allah said to us: 'When you attend to the sick or dying then say only good, for indeed the angels say ""Amin"" to what you say.'"" She said: ""When Abu Salamah died I went to the Prophet and said: 'O Messenger of Allah! Abu Salamah has died.' He said: 'Then say: ""O Allah forgive me and him, and give me a good replacement for him."" She said: ""I said tat, and Allah gave a replace that was better than him: The Messenger of Allah