The Quran states...
And Allah is the Facilitator, the Omniscient.” [^14] The Prophet of Allah (S) has declared: عن النبیّ (ص) قال: «من حقّ الولد علی والده ثلاثة: یُحسِّن اسمه، و یعلّمه الکتابة، و یزوّجه إذا بلغ.» A father has three duties toward his children: he must give them worthy names, teach them literacy, and wed them when they mature.[^15] Procreation Islam favors procreation and regards it as an important objective of marriage.
Imam Muhammad Baqir (‘a) has cited from the Prophet of Allah (S): عن أبی جعفر (ع)، قال: قال رسول الله (ص): «ما یمنع المؤمن أن یتّخذ أهلاً؛ لعلّ الله یرزقه نسمة تثقل الارض بلا اله الّا الله.» What is wrong with a believer taking a spouse; it may be that Allah provides them with a child that vitalizes the world with (speakers of the adage of monotheism:) la ilaha illallah.[^16] The Prophet of Allah (S) has stated: قال النبیّ (ص): تناکحوا تکثروا؛ «فإنّي أباهي بکم الأمم یوم القیامة و لو بالسقط.» Marry so you increase because surely I shall take pride in you, among the civilizations, on the Day of Judgment, even (counting)…