Is it permissible to use contraceptives for birth control and nurturing capability, or to preserve the wife's beauty, or for fear of unlawful earnings? And what is the preferred interval between births?

It is permissible to use contraceptives of all types under four conditions: that they do not cause harm to the woman, that it is with the consent of both spouses, that there is a need for it, such as the mother's fatigue or physical weakness, or the man's poverty and large family, without fearing a decrease in provision, and that the intention is not to completely sever progeny.