I am not sure if my questions went through so I will ask them again. In one of the replies, the rabbi wrote that the halachos of niddah apply to the non-married too.
What does that mean?
Also, I heard that it is better for one to know the source of a mitzva they perform, therefore, why do women have to cover their hair? and Why are women not permitted to wear men’s clothes?
Answer:
1. The halachos of niddah apply before marriage with regard to the prohibition of sexual relations with a woman who is classified as a niddah (virtually all unmarried women). Of course, the particular halachos between husband and wife do not apply.
2. Women cover their hair because the Talmud extracts from a verse that the hair of a woman is considered an erva, a part of the body that must be covered. See Even Ha-Ezer 21; Orach Chaim 75.
3. The Torah writes explicitly that women may not wear men’s clothes (Devarim 22:5). This is considered immodest behavior.
