Anas narrated: "My comfort has been provided in prayer" Prayer is a demonstration of love! It is the best sign of loving Allah and showing the servanthood. That is Almighty Allah's most beloved Messenger's most beloved mission in the world.
One day a bizarre thing happened. Our Prophet was sitting and talking with some of the prominent unbelievers. He was expressing the beauty of Islam and telling them that becoming Muslim was a very big happiness. When they insisted on their dissipation, he was trying to express that another way to soften their hearts.