Sharh al-'Aqeedah at-Tahawiyyah (Recovered Audio) - Shaykh Ahmad Jibril

بسم الله الرحمن الرحيم Shaykh al-Islam Ibn Taymiyah (may Allaah have mercy on him) said: “If the heart is sound in terms of faith, knowledge and feelings, then this will inevitably lead to the soundness of physical actions, such as verbal statements and deeds. As the leading scholars of hadeeth said: Words and deeds, both inward and outward. What is outward must follow what is inward, so if what is inward is sound then what is outward will also be sound, and if it (the former) is corrupt, (the latter) will also be corrupt. Hence one of the Sahaabah said concerning the one who prayed carelessly: If his heart had been humble and focused, his body would have been humble and focused. 

Majmoo’ al-Fataawa, 7/187