There cannot be any doubt left in the mind of any intelligent person that this Quran is the word of Allah, and that Prophet Muhammad conveyed that which was revealed to him in full.

Correspondence and contact between men and women is one of the doors that lead to fitnah. However, it is not haram for a man or woman to like a specific person whom he or she chooses to be a spouse, and feel love for that person and want to marry them if possible.

If a man shakes hands with a (non-mahram) woman during the day in Ramadan, and he ejaculates, his fast is invalidated. He has to repent to Allah from this sin, refrain from eating and drinking for the rest of the day, and make up for that day’s fast later on.

It is not permissible for a man to touch the hands of a woman who is not one of his Mahrams. It is not permissible to shake hands even with a barrier in between such as shaking hands from beneath a garment and the like. The same ruling applies to shaking hands with old women.