Meaning of 'and when they have purified themselves, then come to them from where Allah has ordained for you'

Q 3: What is the meaning of the Ayah (Qur'anic verse): And when they have purified themselves, then go in unto them as Allâh has ordained for you (go in unto them in any manner as long as it is in their vagina). Truly, Allâh loves those who turn unto Him in repentance and loves those who purify themselves (by taking a bath and cleaning and washing thoroughly their private parts, bodies, for their prayers). Your wives are a tilth for you, so go to your tilth, when or how you will

A: It is stated in Tafsir (exegesis of the meanings of the Qur'an) by Ibn Kathir that Ibn `Abbas (may Allah be pleased with them both) commented on the statement: ...then go in unto them as Allâh has ordained for you (go in unto them in any manner as long as it is in their vagina). Saying: Only in the vulva and no where else. Anyone who does anything else will have transgressed the limits. As for the statement: ...so go to your tilth, when or how you will Al-Bukhari and Muslim related concerning the reason of its revelation that the Jews used to say: When a person has sexual intercourse with his wife from behind (in the vulva), the baby will be cross-eyed. Therefore, the Ayah was revealed: ...so go to your tilth, when or how you will which means: Have intercourse anyway you like; from front or from behind as long as it is in one place which is the vulva. As for anal sex, it is forbidden and a grievous sin (Part No. 19; Page No. 286) that must be avoided. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.