Jami` at-Tirmidhi 142
جامع الترمذي#142SahihHisham bin Urwah narrated from his father, (Urwah) from Abdullah bin AI-Arqam. :He (Urwah) said: "While standing for the prayer he (Abdullah bin Al-Arqam) took a man by the hand leading him forward, he (Abdullah) was in front of the people, and he said: 'I heard Allah's Messenger say: "When standing for the prayer and one of you finds that he has to relieve himself then let him relieve himself first
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
In-book reference: 1:142