Al-Sharḥ al-shāmil li-kitāb al-insān al-kāmil fī maʿrifat al-awākhir waʾl-awāʾil maʿa risālat al-kashf waʾl-bayān ʿan asrār al-adyān fī kitāb al-insān al-kāmil wa-kāmil al-insān | Usul