Once the Prophet (ﷺ) entered a lavatory and I placed water for his ablution. He asked, "Who placed it?" He was informed accordingly and so he said, "O Allah! Make him (Ibn `Abbas) a learned scholar in religion (Islam).
Sahih al-Bukhari Book 4, Hadith 9
← Previous Hadith Whenever the Prophet (ﷺ) went to answer the call of nature, he used to say, "Allah-umma inni a`udhu bika minal khubuthi wal khaba'ith i.e. O Allah, I seek Refuge with You from all offensive and wicked things (evil deeds and evil spirits).

Sahih al-Bukhari Book 4, Hadith 8 Next Hadith → Allah's Messenger (ﷺ) said, "If anyone of you goes to an open space for answering the call of nature he should neither face nor turn his back towards the Qibla; he should either face the east or the west."

Sahih al-Bukhari Book 4, Hadith 10