It is narrated from Hazrat Abu Saeed (may Allah be pleased with him) that a person asked the Prophet (peace and blessings be upon him) about coitus interruptus (withdrawal). The Prophet (peace and blessings be upon him) said: Do as you wish, whatever Allah has decreed will happen, and not every drop of semen results in a child. And when Allah intends to create someone, no one can prevent it.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 11884
Hadith Gradingحکم دارالسلام:حديث صحيح، خ: 2542، م: 1438، عمر بن عبيد لا يعرف سماعه من أبى إسحاق السبيعي، هل هو قبل الاختلاط أم بعده