"I have left among you two things; you will never go astray as long as you hold fast to them: the Book of Allah and my Sunnah." (Al-Hakim)
As our Lord has revealed in the verse "Today I have perfected your religion for you and completed My blessing upon you and I am pleased with Islam as a religion for you" (Surat al-Ma'ida, 3), Islam is the final divine religion. Prophet Muhammad (saas) is "the messenger of Allah and the Final Seal of the Prophets" (Surat al-Ahzab, 40). The faithful learn the kind of moral values they need to display in order to attain the approval, compassion and paradise of Allah; what they must avoid and what they must abide by; what is lawful and what is forbidden; in short, all the details regarding the kind of life that will be pleasing to Allah from the Qur'an. Another mercy and blessing of our Lord for believers is the Sunnah of our Prophet (saas).