ما حكم استخدام دم الخفاش لمنع ظهور الشعر في أجساد حديثات الولادة؟

It is not permissible to use bat blood to prevent hair growth for the following reasons:

1. There is no basis for it, and it may cause harm to the skin and transmit diseases.

2. Bat blood is impure (najis).

3. It is not permissible to seek healing with impure substances or to anoint the body with them, as the Prophet (peace be upon him) said: "Seek treatment, but do not seek treatment with what is unlawful," and his prohibition of foul medicine. Ibn Mas'ud also said: "Indeed, Allah has not made your healing in that which He has forbidden to you."

4. It is forbidden to expose a newborn to harm, based on the Almighty's saying: ﴿And do not throw [yourselves] with your [own] hands into destruction﴾, and the Prophet's (peace be upon him) saying: "There should be neither harming nor reciprocating harm."