What subjects are permissible to study at college or university and what are strictly not permissible?

Answer

In choosing a career, consider the following advice of Rasulullah
(Sallallaahu Alayhi Wasallam): ‘Do not undertake an involvement that would
hinder your practice on religion.’ (Mishkãt pg.441; Qadeemi)

The fundamental focus in choosing a profession is to preserve one’s Deeni
and Islamic values. It is not permissible to pursue a profession in which a
person will be compelled to compromise his Deen. Religious rights of
non-Muslims have become a tourist attraction and places of honour. Honouring
such places is obviously prohibited in Islam as it is in honour of incorrect
belief and Aqaaid. As such, it is not permissible to undertake the trade of
tourism as an income if it will involve the above or any other sinful
activity.

and Allah Ta’ala Knows Best

Mufti Ebrahim Desai
FATWA DEPT.

Source