It is reported that Abū Al-Dardā - Allāh be pleased with him - said:
You will never be pious (a person of taqwā) until you become knowledgeable, and you will never be beautiful with your knowledge until you act [by it].
Ibn ʿAbd Al-Barr, Jāmiʿ Bayān Al-ʿIlm wa Faḍlihī article 1239.