Dr. Sano Koutoub Moustapha, professor of Fiqh and its Principles, International Islamic University Malaysia, states: “The sources of halal and haram are divided into primary sources namely Qur’an, Sunnah and secondary sources namely “Ijtihad”, consensus, analogy, equity, blocking the means, public interest, presumption of continuity and custom. Based on these sources, there will be no modern or new issue in the world which we can find its status in light of halal and haram. Accordingly, if we want to find the legal ruling for any new or modern item, we shall observe the ranking of the sources. In other words, Qur’an, Sunnah, Ijma` (Consensus), Qiyas (Anology), maslahah (public interest), Istihsan (equity), sadd adh-dhara’i` (blocking the means), Istishab (presumption of the continuity), `urf (custom). For sure and certain, no new or modern can not be covered by these sources.
All in all, we should always refer our questions to learned people and scholars, we will surely find an answer to them.