What is the ruling on parents choosing to perform a sex-change operation for their child born with both male and female genitalia, and do they commit a sin by making this choice?

It is permissible to perform a sex-change operation on a hermaphrodite with an ambiguous condition (khuntha mushkil) to either male or female, due to the hardship and difficulty that would result from not allowing it. As for the hermaphrodite whose condition is clear, it is not permissible to change their sex; however, it is permissible to remove excess features that do not belong to their sex.