Sunan an-Nasa'i 1137
سنن النسائي#1137SahihIt was narrated from Abu Hurairah that:The Messenger of Allah (ﷺ) said: "The closest that a person can be to his Lord, the Mighty and Sublime, is when he is prostrating, so increase in supplication then
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 Muslim
In-book reference: 12:109