What is the waiting period (iddah) for a pregnant woman whose husband dies, if she was revocably divorced and then her husband died one month after the divorce? And what is the reason for the people of Iraq being specialized in the school of opinion (Ahl al-Ra'y), and the people of Hijaz in the school of Hadith (Ahl al-Hadith)?

A pregnant woman whose husband has died observes the waiting period (iddah) until she gives birth, not until the longer of the two periods [i.e., not until four months and ten days or childbirth, whichever is longer]. This is what the jurists have agreed upon. The "People of Opinion" (Ahl al-Ra'y) were so named because of their widespread application of analogical reasoning (qiyas), which all imams practiced and is not a flaw. The blameworthy opinion is that which stems from caprice. The Hanafis expanded in the use of opinion (ra'y) and analogical reasoning (qiyas) due to their rigorous verification of hadiths, their non-reliance on solitary narrations (khabar al-ahad) in matters of widespread affliction, and their non-reliance on a hadith if it contradicted established legal principles.