Jami` at-Tirmidhi 22

جامع الترمذي#22Sahih

Abu Hurairah narrated that :Allah's Messenger said: "If it were not that it would be difficult on my nation, then I would have ordered them to use the Siwak for each prayer

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 MaaroufSahih

Zubair Ali ZaiSahih

In-book reference: 1:22

All of Jami` at-Tirmidhi