Answered by Mufti Mohamed Umer Ibrahim
1) Am I correct in assuming that when an animal is slaughtered for eating, the blood that flows from the neck of the animal is najas but blood that is found later in the meat or organs, is pure and not haram to consume?
Wa alaik as salam
1) Your assumption is correctthe blood remaining within the animal’s veins after slaughtering is halal and pure. It is stated in Al-Fatawa Al-Hindiyyah:
2) The flowing blood inhaled by the animal and found in the breathing passages and lungs is najis. It must be washed off before consumption. It is stated in Al-Fatawa Al-Hindiyyah:
3) Kidneys are halal to consume. It is stated in Al-Hindiyyah: