Mishkat al-Masabih
Mishkat al-Masabih 1617
Arabic hadith text
وَعَنْ أُمِّ سَلَمَةَ قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذَا حَضَرْتُمُ الْمَرِيضَ أَو الْمَيِّت فَقولُوا خيرا فَإِن الْمَلَائِكَةَ يُؤَمِّنُونَ عَلَى مَا تَقُولُونَ» . رَوَاهُ مُسْلِمٌ
Translation
Umm Salama reported that the Messenger of Allah, peace and blessings be upon him, said, "When you visit someone who is ill or dying, speak good words, for the angels say Amen to what you say." Muslim transmitted it.