The ruling on the prayer of one who has blood on him and is aware of it

Question:
May Allah reward you, Your Eminence, father. The questioner says: What is the ruling on the prayer of one who prays while having blood on him, and he is aware of it?

Answer:
The safest course is for him to repeat the prayer, because scholars have differed on whether blood is ritually impure or not. The precaution is that one does not pray with it while being aware of it. The Prophet (peace and blessings be upon him) said to the menstruating woman when she asked him: She rubs it, then she rubs it, then she sprinkles it with water, then she prays in it.
This indicates that blood is ritually impure and must be washed. Likewise, the Prophet (peace and blessings be upon him) took off his sandals during the prayer. He used to pray in his sandals, but he took them off on one occasion. When he finished the prayer and the Companions asked him—or the Companions took off their sandals following his example—he said, “Why did you take them off?” They said, “Because we saw you take them off.” He said, “Jibril informed me that there is harm in them.” They did not say the harm was blood, but rather the blood of a tick or an insect. This indicates that blood is ritually impure, even though some scholars hold that it is not ritually impure. They say that the Companions were wounded in battles, their blood would flow, and they would pray. And when 'Umar ibn al-Khattab was stabbed, he completed the prayer with blood on him, so blood is not ritually impure. However, the safest course for him is to repeat the prayer. Yes.