Is it permissible to transplant the heart of a non-Muslim to a Muslim child if their heart is not developing naturally?
There is no disfavor (karaha) in implanting the heart of a deceased disbeliever into the body of a Muslim, because this pineal organ is not the locus of disbelief or faith.
Summarized from the full answer at Ftawy · reviewed Sep 2, 2026
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