Ash-Shaykh Albany rahimahullah mentions that the meat of an animal should be completely washed from the type of blood that gushes out from the animal while it is in its last stages of life. However, it is not najis [impure], and one could still pray with traces of it on one’s clothes. This is also the opinion of Shaykh Muqbil rahimahullah.
لا أجد في ما أوحي إلي محرما على طاعم يطعمه إلا أن يكون ميتة أو دما مسفوحا
Say, “I do not find within that which was revealed to me [anything] forbidden to one who would eat it unless it be a dead animal or blood spilled out… [6:145]
AbdulFattaah Bin Uthman