Is it permissible for a young person or a group of Muslim youths to sit in a party which includes men and women,
whether one woman or more, with the intention of Da`wah (calling to Islam)?
If they intend with their Da`wah to change the Munkar (that which is unacceptable or disapproved of by Islamic law and Muslims of sound intellect) in that society, and they have means by which they can achieve this, it is permissible for them to do so. Otherwise, they should stay away from them. (Part No. 12; Page No. 265) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.