Hadith of Al-Mughirah bin Shu'bah (رضي الله عنه):
Al-Mughirah bin Shu'bah (رضي الله عنه) narrated:"The Messenger of Allah (ﷺ) went away until he was out of my sight and then relieved himself."
(Sahih Al-Bukhari: 363, Sahih Muslim: 273)
Hadith of Abdullah bin Ja'far (رضي الله عنه):
Abdullah bin Ja'far (رضي الله عنه) narrated:
"The thing most beloved to the Messenger of Allah (ﷺ) to use as a cover when relieving himself was a mound or a cluster of date palm trees."
This content is taken from "Dhiya al-Islam fi Sharh al-Imam bi Ahadith al-Ahkam" by Sheikh Taqi al-Din Abi al-Fath, translated by Maulana Mahmood Ahmad Ghaznfar.