(The) definition of (unlawful “haram” is what Allah threatened its committer), i.e., the one who does it, (with punishment)
(The) definition of (unlawful “haram” is what Allah threatened its committer), i.e., the one who does it, (with punishment), i.e., its committer is deserving of punishment in the Hereafter, (and promised its avoider with reward)…