Umdah al-Ahkam (The Support of Rulings) is one of the most celebrated works in the genre of Jami’ al-Usul (comprehensive compilations). Authored by Hafidh Abdul-Ghani al-Maqdisi, a prominent Hadith master of the 6th century Hijri, the book exclusively selects Hadiths that are cited as primary proofs in legal rulings.