That the Messenger of Allah offered the funeral prayer for a mother who had died in childbirth, and he stood in line with her middle. (Using translation from Nasāʾī 1979)
أَنَّ النَّبِيَّ ﷺ صَلَّى عَلَى أُمِّ فُلَانٍ مَاتَتْ فِي نِفَاسِهَا فَقَامَ وَسَطَهَا