Frigidity means that a woman does not like or want to have sexual intercourse, or is not interested in it. This is not an ideal characteristic of women in Islam. A woman should not make dua that she remains frigid.
Islam is a religion which encourages sex within marriage. This protects people from engaging in illicit relationships. Islam teaches that both partners should try to enjoy the pleasure of sexual intercourse and foreplay, since this is something that Allah has created within humans for procreation, as well as enjoyment.
Almighty Allah knows best.
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