If any servant (of Allah) who suffers a calamity says:" We belong to Allah and to Him shall we return; O Allah, reward me for my affliction and give me something better than it in exchange for it," ' Allah will give him reward for affliction, and would give him something better than it in exchange. She (Umm Salama) said: When Abu Salama died. I uttered (these very words) as I was commanded (to do) by the Messenger of Allah ﷺ. So Allah gave me better in exchange than him. i. e. (I was taken as the wife of) the Messenger of Allah ﷺ.  

أَنَّهُ سَمِعَ أُمَّ سَلَمَةَ زَوْجَ النَّبِيِّ ﷺ تَقُولُ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَا مِنْ عَبْدٍ تُصِيبُهُ مُصِيبَةٌ فَيَقُولُ إِنَّا لِلَّهِ وَإِنَّا إِلَيْهِ رَاجِعُونَ اللَّهُمَّ أْجُرْنِي فِي مُصِيبَتِي وَأَخْلِفْ لِي خَيْرًا مِنْهَا إِلاَّ أَجَرَهُ اللَّهُ فِي مُصِيبَتِهِ وَأَخْلَفَ لَهُ خَيْرًا مِنْهَا قَالَتْ فَلَمَّا تُوُفِّيَ أَبُو سَلَمَةَ قُلْتُ كَمَا أَمَرَنِي رَسُولُ اللَّهِ ﷺ فَأَخْلَفَ اللَّهُ لِي خَيْرًا مِنْهُ رَسُولَ اللَّهِ ﷺ  

[Machine] On the authority of Umm Salamah, the wife of the Prophet ﷺ, she said: I heard the Messenger of Allah ﷺ say, "Whenever a servant is afflicted with a calamity and he says, 'Verily, to Allah we belong and to Him we shall return. O Allah, reward me for my affliction and replace it for me with something better,' then Allah ﷻ rewards him for his affliction and replaces it for him with something better." Umm Salamah said, "When Abu Salamah passed away, I said, 'Who is better than Abu Salamah, the companion of the Messenger of Allah ﷺ?' Then Allah ﷻ made me firm in saying it, so I said, 'O Allah, reward me in my affliction and replace it for me with something better.' After that, I married the Messenger of Allah ﷺ."  

عَنْ أُمِّ سَلَمَةَ زَوْجِ النَّبِيِّ ﷺ قَالَتْ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ مَا مِنْ عَبْدٍ تُصِيبُهُ مُصِيبَةٌ فَيَقُولُ إِنَّا لِلَّهِ وَإِنَّا إِلَيْهِ رَاجِعُونَ اللهُمَّ أْجُرْنِي فِي مُصِيبَتِي وَأخْلِفْ لِي خَيْرًا مِنْهَا إِلَّا أَجَرَهُ اللهُ فِي مُصِيبَتِهِ وَخَلَفَ لَهُ خَيْرًا مِنْهَا قَالَتْ فَلَمَّا تُوُفِّيَ أَبُو سَلَمَةَ قُلْتُ مَنْ خَيْرٌ مِنْ أَبِي سَلَمَةَ صَاحِبِ رَسُولِ اللهِ ﷺ قَالَتْ ثُمَّ عَزَمَ اللهُ ﷻ لِي فَقُلْتُهَا اللهُمَّ أْجُرْنِيفِي مُصِيبَتِي وَأخْلِفْ لِي خَيْرًا مِنْهَا قَالَتْ فَتَزَوَّجْتُ رَسُولَ اللهِ ﷺ  

If any Muslim who suffers some calamity says, what Allah has commanded him," We belong to Allah and to Him shall we return; O Allah, reward me for my affliction and give me something better than it in exchange for it," Allah will give him something better than it in exchange. When Abu Salama died she said: What Muslim is better than Abu Salama whose family was the first to emigrate to the Messenger of Allah ﷺ. I then said the words, and Allah gave me God's Messenger ﷺ in exchange. She said: The Messenger of Allah ﷺ sent Hatib b. Abu Balta'a to deliver me the message of marriage with him. I said to him: I have a daughter (as my dependant) and I am of jealous temperament. He (the Holy Prophet) said: So far as her daughter is concerned, we would supplicate Allah, that He may free her (of her responsibility) and I would also supplicate Allah to do away with (her) jealous (temperament). (Using translation from Muslim 918a)   

أَنَّهَا قَالَتْ سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ مَا مِنْ مُسْلِمٍ تُصِيبُهُ مُصِيبَةٌ فَيَقُولُ مَا أَمَرَهُ اللهُ ﷻ إِنَّا لِلَّهِ وَإِنَّا إِلَيْهِ رَاجِعُونَ اللهُمَّ أُؤْجُرْنِي فِي مُصِيبَتِي وَاخْلُفْ لِي خَيْرًا مِنْهَا إِلَّا أَخْلَفَ اللهُ ﷻ لَهُ خَيْرًا مِنْهَا قَالَتْ فَلَمَّا مَاتَ أَبُو سَلَمَةَ قُلْتُ أِيُّ الْمُسْلِمِينَ خَيْرٌ مِنْ أَبِي سَلَمَةَ أَوَّلُ بَيْتٍ هَاجَرَ إِلَى رَسُولِ اللهِ ﷺ ثُمَّ إِنِّي قُلْتُهَا فَأَخْلَفَ اللهُ ﷻ لِي رَسُولَ اللهِ ﷺ قَالَتْ فَأَرْسَلَ إِلَيَّ رَسُولُ اللهِ ﷺ حَاطِبَ بْنَ أَبِي بَلْتَعَةَ يَخْطُبُنِي لَهُ فَقُلْتُ إِنَّ لِي بِنْتًا وَأَنَا غَيُورٌ فَقَالَ أَمَّا ابْنَتُهَا فَنَدْعُو اللهَ ﷻ أَنْ يُغْنِيَهَا وَأَدْعُو اللهَ أَنْ يُذْهِبَ الْغَيْرَةَ