How does Salah compliment Shahadah?

Although Salah also forces Muslims to physically remind themselves of God’s greatness, which the Shahadah does not, Salah and Shahadah complement each other as the declaration of faith is an expression of God’s greatness and uniqueness, while the recitations in Rak’ah are reminders of God’s greatness, - “God is the greatest”, and him being the ultimate God, “How perfect is my Lord the most high”. Therefore Shahadah drives the pillar of Salah into action.