Hadith 4:18
She said, “The Prophet died lying between my breast and my collarbone. I will never feel bad about anyone having a painful death after what I saw the Prophet suffer.” Bukhari transmitted it.
وَعَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ: مَاتَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بَيْنَ حَاقِنَتِي وَذَاقِنَتِي فَلَا أَكْرَهُ شِدَّةَ الْمَوْتِ لِأَحَدٍ أَبَدًا بَعْدَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ. رَوَاهُ الْبُخَارِيُّ
Original Reference: Mishkat al-Masabih 1540