Zafar explains to Tom the meanings of halal and haram in Islam. Halal refers to things that are permissible, while haram refers to things that are prohibited. As examples, Zafar discusses how Islam prohibits the consumption of blood and pork. Blood contains high levels of uric acid, which can be harmful to human health. Pigs cannot be slaughtered in the humane way prescribed in Islam by cutting the jugular vein, as pigs do not have identifiable necks. The meat and fat of pigs also pose health risks like parasites and diseases due to their biochemistry.