Sunan Ibn Majah, Book 1, Hadith 357 (In-Book) ⓘ
It was narrated from Ya'la bin Murrah that: When the Prophet went to relieve himself, he would go far away.
حَدَّثَنَا يَعْقُوبُ بْنُ حُمَيْدِ بْنِ كَاسِبٍ، حَدَّثَنَا يَحْيَى بْنُ سُلَيْمٍ، عَنِ ابْنِ خُثَيْمٍ، عَنْ يُونُسَ بْنِ خَبَّابٍ، عَنْ يَعْلَى بْنِ مُرَّةَ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ كَانَ إِذَا ذَهَبَ إِلَى الْغَائِطِ أَبْعَدَ .
also referenced under: Hadith 333 (Reference) & Volume 1, Book 1, Hadith 333 (DarusSalam)