Language:
كتاب المغازى
64  
Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi)
(83)
Chapter: The sickness of the Prophet (saws) and his death
(83)
بَابُ مَرَضِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَوَفَاتِهِ
Sahih al-Bukhari 4462

Narrated Anas:

When the ailment of the Prophet (ﷺ) got aggravated, he became unconscious whereupon Fatima said, "Oh, how distressed my father is!" He said, "Your father will have no more distress after today." When he expired, she said, "O Father! Who has responded to the call of the Lord Who has invited him! O Father, whose dwelling place is the Garden of Paradise (i.e. Al-Firdaus)! O Father! We convey this news (of your death) to Gabriel." When he was buried, Fatima said, "O Anas! Do you feel pleased to throw earth over Allah's Messenger (ﷺ)?"

حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا حَمَّادٌ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، قَالَ لَمَّا ثَقُلَ النَّبِيُّ صلى الله عليه وسلم جَعَلَ يَتَغَشَّاهُ، فَقَالَتْ فَاطِمَةُ ـ عَلَيْهَا السَّلاَمُ ـ وَاكَرْبَ أَبَاهُ‏.‏ فَقَالَ لَهَا ‏ "‏ لَيْسَ عَلَى أَبِيكِ كَرْبٌ بَعْدَ الْيَوْمِ ‏"‏‏.‏ فَلَمَّا مَاتَ قَالَتْ يَا أَبَتَاهْ، أَجَابَ رَبًّا دَعَاهُ، يَا أَبَتَاهْ مَنْ جَنَّةُ الْفِرْدَوْسِ مَأْوَاهُ، يَا أَبَتَاهْ إِلَى جِبْرِيلَ نَنْعَاهْ‏.‏ فَلَمَّا دُفِنَ قَالَتْ فَاطِمَةُ ـ عَلَيْهَا السَّلاَمُ ـ يَا أَنَسُ، أَطَابَتْ أَنْفُسُكُمْ أَنْ تَحْثُوا عَلَى رَسُولِ اللَّهِ صلى الله عليه وسلم التُّرَابَ
Reference : Sahih al-Bukhari 4462
In-book reference : Book 64, Hadith 478
USC-MSA web (English) reference : Vol. 5, Book 59, Hadith 739
  (deprecated numbering scheme)