Muslim Seminary in India, Darul Uloom Deoband,  issued a fatwa saying temporarily use of conntraceptives is allowed and is not Haram. It is contradicting to what is beleived by many Muslims that child birth control is unlawful (haraam) in Islam.

Contradicting the popular belief that methods to control child birth are unlawful in Islam, a leading Islamic seminary has issued a fatwa allowing use of contraceptives by Muslims to keep a gap between two children. Accroding to Indian government reports about 40 percent of Muslims in India use contraceptives.

According to Quran

Kill not your children for fear of want: We shall provide sustenance for them as well as for you. Verily the killing of them is a great sin. (Quran 17:31)

 Contraceptives are allowed only under certain conditions such as danger to health of the wife.

Several Muslim countries like Pakistan, Iran and Turkey are encouraging their citizen to use contraceptives to keep the population growth rate under control.