Yahya related to me from Malik from Rabia ibn Abi Abd ar-Rahman from Umm Salama, the wife of the Prophet may Allah bless him and grant him peace, that the Messenger of Allah ﷺ said, "If a misfortune befalls some one and he says, as Allah has ordered, 'We belong to Allah and to Him we are returning. O Allah, reward me in my misfortune and give me better than it afterwards,' Allah will do that for him" (Inna lillahi wa inna ilayhi rajiun. Allahumma' jurniy fi musiybatiy, wa a qibhiy khayran minha, illa faala 'llahu dhalika bihi.). Umm Salama said, "When Abu Salama died I said that, and then I said, 'Who is better than Abu Salama?' " And then Allah left her the Messenger of Allah ﷺ and he married her.  

رَسُولَ اللَّهِ ﷺ قَالَ مَنْ أَصَابَتْهُ مُصِيبَةٌ فَقَالَ كَمَا أَمَرَ اللَّهُ إِنَّا لِلَّهِ وَإِنَّا إِلَيْهِ رَاجِعُونَ اللَّهُمَّ أْجُرْنِي فِي مُصِيبَتِي وَأَعْقِبْنِي خَيْرًا مِنْهَا إِلَّا فَعَلَ اللَّهُ ذَلِكَ بِهِ قَالَتْ أُمُّ سَلَمَةَ فَلَمَّا تُوُفِّيَ أَبُو سَلَمَةَ قُلْتُ ذَلِكَ ثُمَّ قُلْتُ وَمَنْ خَيْرٌ مِنْ أَبِي سَلَمَةَ فَأَعْقَبَهَا اللَّهُ رَسُولَهُ ﷺ فَتَزَوَّجَهَا  

The Messenger of Allah ﷺ: When you attend dying man, you should say good words, for the angels say Amin to what you say. When Abu Salamah died, I said: What should I say, Messenger of Allah? He said: O Allah forgive him, and give us something good in exchange. She said: So Allah gave me Muhammad ﷺ in exchange for him. (Using translation from Abū Dāʾūd 3115)  

قَالَ رَسُولُ اللَّهِ ﷺ «إِذَا حَضَرْتُمُ الْمَيِّتَ فَقُولُوا خَيْرًا فَإِنَّ الْمَلَائِكَةَ تُؤَمِّنُ عَلَى مَا تَقُولُونَ» قَالَتْ فَلَمَّا مَاتَ أَبُو سَلَمَةَ قُلْتُ يَا رَسُولَ اللَّهِ مَا أَقُولُ؟ قَالَ «قُولِي اللَّهُمَّ اغْفِرْ لَهُ وَأَعْقِبْنَا عُقْبَى صَالِحَةً» قَالَتْ فَأَعْقَبَنِي اللَّهُ مُحَمَّدًا ﷺ