Birth control refers to spacing after childbirth. If it is natural and spontaneous (spacing that comes after childbirth) it is permissible from the Islamic point of view, provided it does not pose any threat to the woman’s health, and it is done with the agreement of both parties (husband and wife).
Though it is recommended to seek the doctor’s view by asking for medical advice as to whether the process of child spacing is harmful to the woman’s health or not.
However, if the birth control is done in compliance with a scheme intended to limit the number of people in a nation, then it contradicts the objective of Sheriah which emphasizes on the protection of lineage and multiplication of descendants as addressed by the prophet who said: “Have more children because I will vie the nations in number by you on the Day of Resurrection”. The Islamic Ummah is therefore in need of more births to increase its population and raise its culture.