1259?-1316 1292-1350 biography criticism customsandpractices dietarylaws doctrines earlyworksto1800 etc fatwas food hadith history ibnqayyimal-jawzīyah interpretation interpretationandconstruction islam islamiclaw knowledge law+ muslims muslimscholars muḥammadibnabībakr prayer purity religiousaspects ritual rituals sources sulaymānibnʻabdal-qawī ulama ṭūfī