I use and I intend to continue using an IUD (intrauterine device) until my children grow up because they are still young. Is this lawful or not?
There is no harm in using this contraceptive or another if they do not harm the woman or affect her acts of worship, and if they are used for a sound reason, such as a sickness or fearing for her health due to frequent pregnancies. Both spouses must agree to this and there is no harm in that. This is not one of the types of birth control which are forbidden by the Shari`ah (Islamic law) and its objectives. One of the objectives of Shari`ah is the proliferation of the Muslim community. It is confirmed that the Prophet (peace be upon him) said,
"Marry the one who is loving and prolific, for I will be proud of your great number in front of the Prophets on the Day of Resurrection."
(Part No. 19; Page No. 315)
There are many texts in Shari`ah to this effect. Shaykh Al-Islam,
Ibn Taymiyyah, said: "Refraining from having children is something that does not please Allah or His Messenger (peace be upon him). Moreover, it was not revealed to any of the previous prophets. Allah (Exalted be He) says:
And indeed We sent Messengers before you (O Muhammad صلى الله عليه و سلم) and made for them wives and offspring.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.