Sahih al-Bukhari 147
Book 4: Ablutions (Wudu') · Narrated by `Aisha
Arabic
حَدَّثَنَا زَكَرِيَّاءُ، قَالَ حَدَّثَنَا أَبُو أُسَامَةَ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، عَنْ عَائِشَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " قَدْ أُذِنَ أَنْ تَخْرُجْنَ فِي حَاجَتِكُنَّ ". قَالَ هِشَامٌ يَعْنِي الْبَرَازَ.
English translation
Narrated `Aisha:The Prophet (ﷺ) said to his wives, "You are allowed to go out to answer the call of nature
Reference: Sahih al-Bukhari 147, Book of Ablutions (Wudu'). English translation by Dr. Muhammad Muhsin Khan.