That appears to be a matter of discussion - the oldest current recordings don't have the conventant comparison and it seems to be a couple of scholars claiming

That appears to be a matter of discussion - the oldest current recordings don't have the conventant comparison and it seems to be a couple of scholars claiming that bit. https://en.wikipedia.org/wiki/Blood_is_thicker_than_water https://en.wikipedia.org/wiki/Blood_is_thicker_than_water