Jami` at-Tirmidhi 78
جامع الترمذي#78SahihAnas bin Malik narrated:"The companions of Allah's Messenger would sleep, then stand to pray, They would not perform Wudu
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 Muslim
In-book reference: 1:78