Stability and instability of family, as the most important and fundamental social organ, has significant effect on the destiny of a society. The increasing rate of divorce, including legal or emotional ones, is a major social dilemma where the role of family cannot be ignored in fixing it. This is a problem that can be solved by altering the approach of lawmakers i.e. an approach based on 'Consolidation Principle' leads to the stability of family. In other words, this as a general legal principle has been in line with the Sharia law. Based on this principle, whatever causes the family stability is accepted and is in accordance with the religious decree and whatever leads to instability and shakiness of the family foundation is hateful and unaccepted. The consolidation principle is based on rationality, expediency, notoriety and necessity. Similarly, this principle, in clerical way from accessories to totalities, is based on the holy Qur’an and Islamic Traditions.