"The Messenger of Allah ﷺ said: 'A man is not to look at the 'Awrah of a man, and a woman is not to look at the 'Awrah of a woman. A man is not to be alone with a man under one garment, and a woman is not to be alone with a woman under one garment.'" (Using translation from Tirmidhī 2793)  

قَالَ رَسُولُ اللهِ ﷺ «لَا يَنْظُرُ الرَّجُلُ إِلَى عُرْيَةِ الرَّجُلِ وَلَا تَنْظُرُ الْمَرْأَةُ إِلَى عُرْيَةِ الْمَرْأَةِ وَلَا يُفْضِي الرَّجُلُ إِلَى الرَّجُلِ فِي الثَّوْبِ وَلَا تُفْضِي الْمَرْأَةُ إِلَى الْمَرْأَةِ فِي الثَّوْبِ»