Urwa bin 'Abdullah عروة بن عبد الله بن قشير · The Book of Faith

He has found the taste of faith (iman) who is content with Allah as his Lord, with Islam as his religion (code of life) and with Muhammad (ﷺ) as his Prophet.

Verily a person asked the Messenger of Allah (may peace and blessings be upon him) who amongst the Muslims was better. Upon this (the Holy Prophet) remarked: From whose hand and tongue the Muslims are safe.