It was narrated from 'Abdur-Rahman bin Abu Sa'eed Al-Khudri from his father that:The Messenger of Allah said: "No woman should look at the nakedness of another woman, and no man should look at the nakedness of another man
Hadith No. 661
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Shuaib Al Arnaut:
Sahih
Zubair Ali Zai:
Sahih Muslim