Jami` at-Tirmidhi 16

جامع الترمذي#16Sahih

Abdur-Rahman bin Yazld said, :"They said to Salman, 'Your Prophet taught you about everything, even defecating?' So Salman said, 'Yes. He prohibited us from facing the Qiblah when defecating and urinating, performing Istinja with the right hand, using less than three stones for Istinja, and using dung or bones for Istinja

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: 1:16

All of Jami` at-Tirmidhi