Hadithcore
Bulugh al-Maram, 99

Narrated ‘Aisha (rad):

The Prophet (ﷺ) said: “If anyone goes to relive himself, he should conceal himself”. [Reported by Abu Da’ud].

وَعَنْ عَائِشَةَ رَضِيَ اَللَّهُ عَنْهَا; أَنَّ اَلنَّبِيَّ ‏- صلى الله عليه وسلم ‏-قَالَ: { مَنْ أَتَى اَلْغَائِطَ فَلْيَسْتَتِرْ } رَوَاهُ أَبُو دَاوُد َ [1]‏ .‏

References2 variants
In-Book Reference
Book 1, Hadith 117
English Reference
Book 1, Hadith 105