Teaching Al Kitaab And Al Hikmah
So my question is baiscally isn’t it clear that 1. Reciting ayaat leads to learning kitaab 2. Purifying them happens because if learning hikmah. If so then the entire al kitaab should be in the Quran
His job was to transmit Quran, with which he would teach law and ethics. the result was purification. purification is not another duty.