Q: A man has falsely accused a chaste person of being involved in prohibited sexual relations, bringing him into disrepute in the whole society. If
the chaste person kills the slanderer,
will he be sinful or will this action be regarded as defense of one's honor, as stated in a Hadith? Please give us the ruling on this case. May Allah reward you with the best.
It is not permissible to kill a person for the reason mentioned above and this is not regarded as defense of one's honor. Such an action will be a form of transgression of others' souls. The chaste person can ask for the Hadd (ordained punishment for violating Allah’s Law) of Qadhf (falsely accusing a chaste person of involvement in prohibited sexual relations) to be inflicted on the slanderer by the Shari`ah-based authorities. (Part No. 21; Page No. 227) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.