Ref. No. 41/1046
In the name of Allah the most gracious the most merciful
The answer to your question is as follows:
Coat-pant is not an un-Islamic dress. The pant-shirt or coat, in which the contour of body parts is not exposed and the structure of the hidden parts is not revealed, will not be called an un-Islamic dress.
If he conveys Islamic rulings in the light of authentic research done by Ulama-e-Haq then there is nothing wrong. However, a Muslim should always keep on wearing the dress of pious persons.
And Allah knows best
Darul Uloom Waqf Deoband
This answer was collected from the official website of Darul Uloom Deoband Waqf. The institution is based in India and the answers are provided in accordance to the Hanafi Fiqh.