Sunan an-Nasa'i 393
سنن النسائي#393SahihIt was narrated that Samurah said:"I offered the funeral prayer with the Messenger of Allah (ﷺ) for Umm Ka'b who had died during childbirth, and during the prayer, the Messenger of Allah (ﷺ) stood at her middle
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 3:46