Sunan an-Nasa'i 865
سنن النسائي#865SahihIt was narrated that Abu Hurairah said:"The Messenger of Allah (ﷺ) aid: 'When the Iqamah for prayer is said, there is no prayer except the prescribed prayer
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: 10:89