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 Messenger of Allah ﷺ 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). (Using translation from Muslim 919)  

قَالَ النَّبِيُّ ﷺ إِذَا حَضَرْتُمُ الْمَيِّتَ أَوِ الْمَرِيضَ فَقُولُوا خَيْرًا فَإِنَّ الْمَلَائِكَةَ يُؤَمِّنُونَ عَلَى مَا تَقُولُونَ  

[Machine] The Messenger of Allah ﷺ said, "When you witness a deceased person, say good things about them, for the angels will believe in what you say."  

قَالَ رَسُولُ اللهِ ﷺ «إِذَا حَضَرْتُمُ الْمَيِّتَ فَقُولُوا خَيْرًا فَإِنَّ الْمَلَائِكَةَ يُؤَمِّنُونَ عَلَى مَا تَقُولُونَ»