Is it permissible to withdraw from organ donation after signing the donation document to please one's parents? And is the donor sinful if his organs are transplanted into a non-believer or if a man dissects his body?

It is permissible to donate organs after death, provided it does not affect lineage, inherited traits, or general personality. It is stipulated that the donor must be an adult, of sound mind, and mature. Obedience to parents is obligatory if they forbid donation, because it is permissible, and their command is obligatory except in disobedience or harm. Gifting and bequeathing to a non-belligerent infidel is permissible, and it is permissible to uncover the awrah of a deceased woman out of necessity or need, such as for donation. It is permissible to retract the donation document before death.