Nass ( Arabic: نَصّ, romanized: naṣṣ) is an Arabic word variously translated as "a known, clear legal injunction," a "divine decree", [1] a "designation", [2] "written law" as opposed to unwritten law, [3] "canonical text" that forbids or requires, [4] a "textual proof". [5]
In Shia Islam ( Twelver and Isma'ili), nass refers specifically to the designation of an infallible Imam by a previous infallible Imam. [2]