Jami` at-Tirmidhi 515
جامع الترمذي#515SahihHusain narrated:"I heard Umarah bin Rawaibah Ath-Thaqafi - while Bishr bin Marwan was delivering Khutbah and raising his hands in supplication - so Umarah said: 'May Allah disgrace these two insignificant hands, I have seen Allah's Messenger, and he would not do any more than this;'" and Hushaim (one of the narrators) motioned with his index finger
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 ZaiIsnaad Sahih
In-book reference: 4:28