Jami` at-Tirmidhi 571

جامع الترمذي#571Sahih

Tariq bin Abdullah Al-Muharibi narrated that :the Messenger of Allah said: "When you are in Salat then do not spit on your right, but behind you or toward your left, or under your left foot

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: 6:28