Translation:

187. Permitted to you on the night of the fasts is the approach to your wives. They are your garments. And ye are their garments. Allah knoweth what ye used to do secretly among yourselves; but He turned to you and forgave you; so now associate with them and seek what Allah hath ordained for you and eat and drink until the white thread of dawn appear to you distinct from its black thread; then complete your fast till the night appears; but do not associate with your wives while ye are in retreat in the mosques. Those are limits (set by) Allah; approach not nigh thereto. Thus doth Allah make clear His signs to men that they may learn self-restraint.

Notes (Tafseer)

195. Men and women are each other's garments: i.e., they are for mutual support, mutual comfort, and mutual protection, fitting into each other as a garment fits the body. A garment also is both for show and concealment. The question of sex is always delicate to handle: here we are told that even in such matters a clear, open, and honest course is better than fraud or self-deception. The sex instinct is classed with eating and drinking, an animal thing to be restrained, but not to be ashamed of. The three things are prohibited during the fast by day, but permitted after the fast is broken at night till the next fast commences.

196. There is difference of opinion as to the exact meaning of this. I would connect this as a parallel clause with the clause "eat and drink", which follows, all three being governed by "until the white thread", etc. That is, all three things must stop when the fast begins again in the early morning. Or it may mean: What is permitted is well enough, but seek the higher things ordained for you.

197. Those in touch with Nature know the beautiful effects of early dawn. First appear thin white indefinable streaks of light in the east; then a dark zone supervenes; followed by a beautiful pinkish white zone clearly defined from the dark. This is the true dawn; after that the fast begins.

198. Till the night appears: From the actual practice of the Holy Apostle, this is rightly interpreted to mean: "Till sunset."

199. Retreat to the Mosques by night after the fast is broken is specially recommended towards the end of Ramadham, so that all carnal temptations may be avoided.

200. I construe these limits as applying to the whole of the regulations about fasts.