Sahih al-Bukhari 1331
Sahih al-Bukhari · Book 23: Funerals (Al-Janaa'iz) · The offering of the funeral Salat of a woman who died during the delivery (of a child)
Narrated Samura bin Jundab:
حَدَّثَنَا مُسَدَّدٌ ، حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ ، حَدَّثَنَا حُسَيْنٌ ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ بُرَيْدَةَ ، عَنْ سَمُرَةَ ـ رضى الله عنه ـ قَالَ صَلَّيْتُ وَرَاءَ النَّبِيِّ صلى الله عليه وسلم عَلَى امْرَأَةٍ مَاتَتْ فِي نِفَاسِهَا، فَقَامَ عَلَيْهَا وَسَطَهَا.
I offered the funeral prayer behind the Prophet (ﷺ) for a woman who had died during childbirth and he stood up by the middle of the coffin.