According the basics of Islam, The legal sexual relationship is to be between a man and his wife; in which all forms of pleasure are permissible for them except for having anal sex, as it is not permissible due to Allah`s saying: {who abstain from sex; except with those joined to them in the marriage bond, or (the captives) whom their right hands possess, for (in their case) they are free from blame}. And Allah has said, {Your wives are as a tilth unto you: so approach your tilth when or how you will; but do some good act for your souls beforehand; and fear Allah, and know that ye are to meet Him (in the Hereafter)}.

That means; it is permissible for one to have sexual intercourse with one`s wife in her vagina in whatever manner he wishes, whether from behind or from the front, as long as it is in the very tube.

We should teach that for whoever wants to embrace Islam to consequently, recognize and be committed to it, in order to be a Muslim.