Islamic jurisprudence specifies which foods are ḥalāl (حَلَال "lawful") and which are ḥarām (حَرَامْ "unlawful"). This is derived from commandments found in the Qur'an, the holy book of [Islam], as well as the Hadith and Sunnah, libraries cataloguing things the Prophet Mohammed is reported to have said and done. Extensions of these rulings are issued, as fatwas, by Mujtahids, with varying degrees of strictness, but they are not always widely held to be authoritative. According to the Quran, the only foods explicitly forbidden are meat from animals that die of themselves, blood, the meat of swine (porcine animals, pigs), and animals dedicated to other than Allah (either undedicated or dedicated to idols), but a person is not guilty of sin in a situation where the lack of any alternative creates an undesired necessity to consume that which is otherwise unlawful. (Quran 2:173) This is the "law of necessity" in Islamic jurisprudence: "That which is necessary makes the forbidden permissible", which, in the case of dietary laws, allows one to eat pork or carrion, or drink wine or ethanol if one was starving or dying of thirst (although the Shafi'i madhhab differs on the issue of ethanolic drinks).

Taboo food and drink are food and beverages which people abstain from consuming for religious, cultural or hygienic reasons. Many food taboos forbid the meat of a particular animal, including mammals, rodents, reptiles, amphibians, bony fish, and crustaceans. Some taboos are specific to a particular part or excretion of an animal, while other taboos forgo the consumption of plants, fungi, or insects.

Food taboos can be defined as rules, codified or otherwise, about which foods or combinations of foods may not be eaten and how animals are to be slaughtered. The origins of these prohibitions and commandments are varied. In some cases, these taboos are a result of health considerations or other practical reasons. In others, they are a result of human symbolic systems. Some foods may be prohibited during certain festivals (e.g., Lent), at certain times of life (e.g., pregnancy), or to certain classes of people (e.g., priests), although the food is in general permissible.

Various religions forbid the consumption of certain types of food. For example, Judaism prescribes a strict set of rules, called Kashrut, regarding what may and may not be eaten. Islam has similar laws, dividing foods into haraam (forbidden) and halal (permitted). Jains often follow religious directives to observe vegetarianism. Hinduism has no specific proscriptions against eating meat, but some Hindus apply the concept of ahimsa (non-violence) to their diet and consider vegetarianism as ideal, and practice forms of vegetarianism.

Zakir Abdul Karim Naik (Urdu: ذاکر عبدالکریم نائیک; born 18 October 1965) is an Indian public speaker on the subject of Islam and comparative religion. He is the founder and president of the Islamic Research Foundation (IRF), a non-profit organisation that owns the Peace TV channel based in Dubai, UAE. He is sometimes referred to as a televangelist. Before becoming a public speaker, he trained as a doctor. He has written two booklets on Islam and comparative religion. He is regarded as an exponent of the Salafi ideology; he places a strong emphasis on individual scholarship and the rejection of "blind Taqlid", which has led him to repudiate the relevance of sectarian or Madh'hab designations, all the while reaffirming their importance.

Zakir Abdul Karim Naik was born on 18 October 1965 in Mumbai, India. He attended St. Peter's High School in Mumbai. Later he enrolled at Kishinchand Chellaram College, before studying medicine at Topiwala National Medical College and Nair Hospital and later the University of Mumbai, where he obtained a Bachelor of Medicine and Surgery (MBBS). His wife, Farhat Naik, works for the women's section of the IRF.