The Prophet ﷺ was asked:
"Whose Islam is the best?" He replied, "One who avoids harming the Muslims with his tongue and hands."
Excellence in Islam is not only measured by long prayers or constant fasting. It is measured by restraint - by what you do NOT do. By the words you do NOT speak. By the harm you do NOT cause.
Your tongue can destroy a reputation in seconds. Your hands can hurt someone who cannot defend themselves. The Prophet ﷺ is saying: if you control these two, you have grasped the essence of being Muslim.
