It is from the mercy of Allah Almighty that he created peoples and tribes to know each other and has appointed between his creations kindred by blood, and kindred by marriage, so that the creation could be known among them. Islam has come to call for brotherhood and love among Muslims, whether through brotherhood and social relations or through kindred by marriage and lineage. This is what the companions of the Prophet (peace be upon him) are accustomed to, in which they intermarriage with Al Albayt, including the family of Calipha Ali bin Abi Talib (may God be pleased with him), as he has married from them and they have married from him. This indicates the fullness of love and appreciation between the Al - Albayt, and this is what the Calipha Abu Bakr Al-Siddiq expressed by saying: (Watch out for Muhammad from the Al-Albayt) There is no doubt that the multiplicity of intermarriage between companions and Al-Albayt is an expression of this strong relation of flesh ,bond , which shows us the extent of the solid relationship between the caliphs and the family of Calipha Ali bin Abi Talib and they harbored in their hearts friendliness and love for religion and its people, and this is the answer to all the questions asked by the orientalists and the rejectionists and the enemy of the Islamic nation.