Sunan an-Nasa'i 669
سنن النسائي#669SahihIt was narrated that Malik bin Al-Huwayrith said:"The Messenger of Allah (S.A.W) said to me and to a companion of mine: 'When the time for prayer comes, let the two of you call the Adhan then the two of you say Iqamah, then let one of you lead the 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
In-book reference: 7:44