Al-‘Allāmah Aḥmad bn Yaḥyá An-Najmī (رحمه الله) said:
“The actual Islām is the Sunnah. So, whoever is steadfast upon and establishes the Sunnah has established Islām.”
Irshād As-Sārī p. 27
Translated by Ar-risaalah Publications
https://arrisaalahpubs.com/