Question 8: Is it permissible for a person to practice Ijtihaad (juristic effort to infer expert legal rulings) in the Islaamic rulings? Are there certain conditions for a Mujtahid (a scholar qualified to exercise Ijtihaad)? Is it permissible for any person to give an opinion without being aware of the clear evidence supporting it? How authentic is the following Hadeeth: “The most daring to give Fatwaa (recklessly) is the most daring to enter the Hellfire.” Or the Hadeeth that means the same as this?
Answer: All praise is due to Allaah Alone and peace and blessings be upon His Messenger, his family, and Companions! The door to Ijtihaad in the rulings pertaining to Sharee`ah (Islaamic law) is open for any qualified person provided that they know the sources they need to use as reference – the Aayaahs (Qur’aanic verses) and Hadith, and have the ability to understand them and use them as supporting evidence. In addition, a Mujtahid should have knowledge of the grade of the Hadeeth they use as evidence and of the issues on which Ijmaa` (consensus) has taken place so… read more here.