Answer
I say, and with God's success: The dominance is between it and saliva; if the blood dominates, the ablution is invalidated, and if the saliva dominates, it is not invalidated. If they are equal, the ablution is invalidated; because saliva is a liquid by its own force, so is its equal, unlike the dominated one; because it is a liquid by the force of the dominant. This is considered in terms of color: if it is red, the ablution is invalidated, and if it is yellow, it is not invalidated. Refer to: Al-Wiqayah and its explanation, p. 87, and Al-Tabyin 1: 8, and God knows best.