In the current day, objections are raised against the veil. However, people do not realise that the Islamic veil is no prison. It is only a barrier which prevents the free mixing of men and women. The veil saves them from stumbling. A just-minded individual would appreciate that if non-mahram men and women were to mix without any hesitation and concern, and if they were to go about together, they would surely succumb to the flare of their inner-passions. It has often been heard and observed that certain people see no ill in a non-mahram man and woman remaining alone behind closed doors. Civilisation they call it. It is to counter these very adverse effects that the Founder of Islam has forbidden an individual altogether from approaching anything that may lead them to stumble. In this relation, the Holy Prophetsa has stated that where a non-mahram man and woman sit in seclusion, the third of them is Satan. Just reflect on the harrowing outcomes that Europe is having to bear as a result of this non restrictive and unbridled teaching. In certain places, an utterly shameless life of promiscuity is led. This is due to teachings of the sort just mentioned. If you wish to protect a thing from misuse, it must be safeguarded. However, if one does not watch over a possession – and considers the world to be innocent – then keep in mind that it will surely be ruined. The Islamic veil is a truly holy teaching indeed, which through segregation, saves man and woman from stumbling. It has delivered mankind from a grievous and bitter life, on account of which Europe has seen domestic disputes and suicides every other day. The fact that noble women drift into lives of promiscuity is the practical outcome of the permission to gaze freely at non-mahram women.
(Hazrat Mirza Ghulam Ahmadas, Malfuzat, Vol. 1, pp. 33-34)