Is it permissible for a child to donate an organ to one of the needy children, and does this require parental consent, and what is the minimum age for organ donation by children?

Scholars have differed on the ruling regarding organ donation, ranging from absolute prohibition to permissibility under certain conditions. Islamic councils and bodies have permitted it. Jurists have agreed on the invalidity of actions performed by a discerning minor, but they differed on the actions of a discerning minor: what is purely beneficial is valid without the guardian's permission, and what is purely harmful is not valid even with the guardian's permission, and what falls between the two depends on the guardian's permission. A child is not permitted to donate their organs due to the clear harm involved, and preserving their body takes precedence over preserving their wealth, and the guardian is not allowed to give permission for that.