TAHQÎQ - تحقیق
From the root ق ق ح (h.q.q). A making to be really existent. A giving real existence. A holding to be real and true. An affirming. An ascertaining. An investigating. Verifying: investigation, verification. A proving by irrefragable proof. To ascertain, verify, investigate. Investigation about something being true or not. Revealing the haqq or bâtil. Revealing the haqiqah. Investigating deeply, carefully and thoroughgoing.