Ash-Shama'il Al-Muhammadiyah, Book 45, Hadith 325 (In-Book) ⓘ

Ibn 'Abbaas Radiyallahu 'Anhu reports that one of the daughters of Rasulullah Sallallahu 'Alayhi Wasallam was on her death bed. Rasulullah Sallallahu 'Alayhi Wasallam picked her up and put her before him. She passed away in his presence. Ummi Ayman (who was a slave girl of Sayyidina Rasulullah Sallallahu 'Alayhi Wasallam) began wailing aloud. Rasulullah Sallallahu 'Alayhi Wasallam said: "Are you crying before the Messenger of Allah?" (because tears were also flowing from the eyes of Sayyidina Rasulullah Sallallahu'Alayhi Wasallam). She said: 'Do I not see you cry?' Rasulullah Sallallahu 'Alayhi Wasallam replied: "This crying is not prohibited. It is a mercy of Allah". (He softens the hearts of His servants, and creates love and mercy in them). Rasulullah Sallallahu'Alayhi Wasallam then said: "A Muslim is at peace at all times. even when his soul is being taken out, he is busy uttering the hamd (praises) of Allah".

حَدَّثَنَا مَحْمُودُ بْنُ غَيْلانَ، قَالَ‏:‏ حَدَّثَنَا أَبُو أَحْمَدَ، قَالَ‏:‏ حَدَّثَنَا سُفْيَانُ، عَنْ عَطَاءِ بْنِ السَّائِبِ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ‏:‏ أَخَذَ رَسُولُ اللهِ صلى الله عليه وسلم ابْنَةً لَهُ تَقْضِي فَاحْتَضَنَهَا فَوَضَعَهَا بَيْنَ يَدَيْهِ، فَمَاتَتْ وَهِيَ بَيْنَ يَدَيْهِ وَصَاحَتْ أُمُّ أَيْمَنَ، فَقَالَ يَعْنِي صلى الله عليه وسلم‏:‏ أَتَبْكِينَ عِنْدَ رَسُولِ اللهِ‏؟‏ فَقَالَتْ‏:‏ أَلَسْتُ أَرَاكَ تَبْكِي‏؟‏ قَالَ‏:‏ إِنِّي لَسْتُ أَبْكِي، إِنَّمَا هِيَ رَحْمَةٌ، إِنَّ الْمُؤْمِنَ بِكُلِّ خَيْرٍ عَلَى كُلِّ حَالٍ، إِنَّ نَفْسَهُ تُنْزَعُ مِنْ بَيْنِ جَنْبَيْهِ، وَهُوَ يَحْمَدُ اللَّهَ تعالى ‏.‏