There� are� two� issues� that� always� actual� in� Islamic Marriage/Family Law (Munakahat), which until now� has always discussed by scholars, because no matter how much people need a� clear� legal� status,� ie� Marriage� Mut'ah� and� Sirri.� Such controversies are appropriately addressed with no preconceived notions, so that it can be studied with a critical attitude and well mannered� (no� blasphemy).� Marriage� mut'ah� a� variant� in� which marriage� is� governed� by� the� contested� legitimacy� of� Islam between� Sunnis� and� Shi'ites.� In� general,� the� Sunnis� consider mut'ah� marriage� is� a� type� of� marriage� is� not� legitimate� or illegitimate based on the testimony of hadith, Umar ibn Khattab fatwa and ijma 'Sunni clerics. As for the Shiites, particularly the Shiite� Istna� 'Ash'arite,� consider� mut'ah� marriage� is� allowed� or lawful, although in practice� they� diffe r� on� some� of� the implementation.� This� paper� presents� the� analysis� about� the formulation of opinions about the scholars on the legal status of marriage mut'ah.