the traditional portion of Muslim law, based on the words and acts of Muhammad, and preserved in the traditional literature.
Origin of Sunna
First recorded in 1620–30, Sunna is from the Arabic word sunnah literally, way, path, rule
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the body of traditional Islamic law accepted by most orthodox Muslims as based on the words and acts of Mohammed
Word Origin for Sunna
C18: from Arabic sunnah rule