Once I went up the roof of our house and saw Allah's Messenger (ﷺ) answering the call of nature while sitting over two bricks facing Baitul-Maqdis (Jerusalem). (See Hadith No. 147).
Sahih al-Bukhari Book 4, Hadith 15
← Previous Hadith I went up to the roof of Hafsa's house for some job and I saw Allah's Messenger (ﷺ) answering the call of nature facing Sham (Syria, Jordan, Palestine and Lebanon regarded as one country) with his back towards the Qibla. (See Hadith No. 147).

Sahih al-Bukhari Book 4, Hadith 14 Next Hadith → Whenever Allah's Messenger (ﷺ) went to answer the call of nature, I along with another boy used to accompany him with a tumbler full of water. (Hisham commented, "So that he might wash his private parts with it.)"

Sahih al-Bukhari Book 4, Hadith 16