‘And ‘Umar (may Allah be pleased with him) said: The fulfillment of rights is established only by fulfilling the conditions, and you will receive according to the condition. Al-Miswar narrated that I heard the Prophet (peace and blessings of Allah be upon him) mention one of his sons-in-law, and he greatly praised him for fulfilling the rights of kinship, and said: Whenever he spoke to me, he spoke the truth, and whenever he made a promise, he fulfilled it.’

Narrated `Uqba bin Amir: Allah's Apostle said, "From among all the conditions which you have to fulfill, the conditions which make it legal for you to have sexual relations (i.e. the marriage contract) have the greatest right to be fulfilled."