This chapter takes as its starting point Bernard Weiss's central idea that jurists consistently upheld the textualist approach to determine the law. Weiss defines textualism specifically as "an approach to the formulation of the law that seeks to ground all law in a closed canon of foundational texts and refuses to accord validity to law that is formulated independently of these texts". This central idea of Weiss's Spirit of Islamic Law undoubtedly is correct both when it comes to canonical acts of worship, and when it comes to devotional practices more generally. The chapter brings texture to Weiss's notion of textualism and, ultimately, shows that jurists' attempt to preserve the supremacy of the text as the exclusive way to determine legal norms motivated some jurists to be creative and responsive interpreters as well as active religious leaders. Keywords: jurist; legal norms; Spirit of Islamic Law