What is forbidden for the pretexts of permissible for the task of the right

What is the campus of a dam for excuses permitted for interest paramount: Excuses are considered originally from the origins of religion upon which much of the jurisprudence that is the subject of Aanbar in Islamic law, rule, street is wise arranged rule prohibition on matters of a dam for a pretext, but the interest may appear preponderant turning the rule of prohibition to permissibility, and in spite of that, these provisions may canceled and changed if it conflicted with a valid purpose,