حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُوسَى، أَنْبَأَنَا إِسْمَاعِيلُ بْنُ عَبْدِ الْمَلِكِ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ خَرَجْنَا مَعَ رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ فِي سَفَرٍ وَكَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ لاَ يَأْتِي الْبَرَازَ حَتَّى يَتَغَيَّبَ فَلاَ يُرَى ‏.‏

It was narrated that Jabir said: "We went out on a journey with the Messenger of Allah, and the Messenger of Allah would not relieve himself until he had disappeared and could not be seen by anyone." Translation Not Available

Book Ref: Sunan Ibn Majah Book 1 Hadith 335
Web Ref:  Sunan Ibn Majah Vol 1 Book 1 Hadith 335