Abū ‘Imrān Mūsā b. Abı̄ ’l-H ̇ ayy Khalı̄la. See (Abū ‘Imrān) Mūsā b. Abı̄ ’l-H ̇ ayy Khalı̄la Abū Ish ̇ āq Ibrahı̄m b. ‘At ̇ ā’, 2, 48, 180, 183 Abū ’l-Fad ̇ l b. Salmān, 315–317 Abū ’l-H ̇ asan b. H ̇ ayyim, 171, 293 Abūn b. S ̇ adaqa, 87, 128, 238, 294–295 Abū Sa‘ı̄d, 83, 131 agents and agency agency law, 130, 151–159, 358 agency transactions statistically compared, 143 as _ h _ ābunā and s _ uh _ ba comp...