Explanation

The Prophet (may Allah's peace and blessings be upon him) informs that Allah commanded him to fight the polytheists until they testify that no deity is truly worthy of worship except Allah alone without any partner and that Muhammad (may Allah's peace and blessings be upon him) is His Messenger and act upon this testimony by observing the five prayers every day and night and paying the obligatory Zakah to those who are entitled to receive it. If they do these things, Islam protects their lives and properties, and it, thus, becomes unlawful to kill them unless they commit a crime or felony that makes them worthy of being killed in compliance with the rulings of Islam. Then, on the Day of Judgment, Allah Almighty will be in charge of their reckoning as He knows their innermost thoughts.