The same external meaning of the Quranic verses has made the sayings of the Prophet complementary to the words of the Quran and has declared them to be authoritative like the Quran. For as the Quran says: "And We have revealed unto thee the Remembrance that thou mayst explain to mankind that which hath been revealed for them" (Quran, XVI, 44). And, "He it is who hath sent among the unlettered ones a messenger of their own, to recite unto them His revelations and to make them grow, and to teach them the scripture and Wisdom" (Quran, LXII, 2). And, "And whatsoever the messenger giveth you, take it. And whatsoever he forbiddeth, abstain (from it)" (Quran, LIX, 7). And, "Verily in the messenger of Allah ye have a good example" (Quran, XXXIII, 21).
It is quite evident that such verses would not have any real meaning if the words and deeds of the Prophet and even his silence and approval were not authority for us just as the Quran itself is. Thus the words of the Prophet are authoritative and must be accepted by those who have heard them orally or received them through reliable transmission. Moreover, through such a completely authentic chain of transmission it is known that the Holy Prophet said, "I leave two things of value amidst you in trust which if you hold on to you will never go astray: the Quran and the members of my household. These will never be separated until the Day of Judgment." According to this and other definitely established hadiths the words of the Family of the Household of the Prophet form a corpus that is complementary to the Prophetic religious sciences and are inerrant in the explanation of the teachings and injunctions of Islam. Their sayings, received orally or through reliable transmission, are reliable and authoritative.
Therefore, it is clear that the traditional source from which the formal and external aspect of religion is derived, which is an authoritative document and which is also the basic source for the religious thought of Islam, consists of two parts: The Book (the Quran) and the Sunnah. By the Book is meant the external aspect of the verses of the Holy Quran; and by the Sunnah, hadith received from the Prophet and his revered Household.
The Messianic Leader, Al Mahdi in Other Religions
