Jami` at-Tirmidhi 592
جامع الترمذي#592SahihAbdullah bin Abi Qatadah narrated from his father that :the Messenger of Allah said: "When the Iqamah is called for the prayer, then do not stand until you see that I have come out
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirSahih
Al-AlbaniSahih
Bashar Awad MaaroufHasan Sahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 6:49