Risālat al-Ḥuqūq
Hadith 10وأَمَّا حَقُّ فَرْجِكَ انْ تُحْصِنَهُ عَن الْزِّنا و تَحْفِظَهَ مِن أنْ يُنْظَر الَيْهِ.
The right of your private part is that you protect it from fornication and guard it against being looked upon.