“ O you who believe! Eat of the good things that We have provided for you, and be thankful to Allah if it is He alone whom you worship. Indeed, what He has forbidden to you is the flesh of dead animals and blood and the flesh of swine, and that which has been sacrificed to anyone other than Allah. But if one is compelled by necessity, neither craving (it) nor transgressing, there is no sin on him; indeed, Allah is Forgiving, Merciful.”
Lecture speaks of the 4 categories of food forbidden for us to eat and also the 5 categories forbidden in regards to how an animal was killed.