The Israelites took the blood of the covenant of circumcision, and they put (it) upon the lintel of their houses, and when the Holy One, blessed be He, passed over to plague the Egyptians, He saw the blood of the covenant of circumcision upon the lintel of their houses and the blood of the Paschal lamb, He was filled || with compassion on Israel, as it is said, "And when I passed by thee, and saw thee weltering in thy (twofold) blood, I said unto thee, In thy (twofold) blood, live; yea, I said unto thee, In thy (twofold) blood, live" (Ezek. 16:6).
"In thy blood" is not written here, but in "thy (twofold) blood," with twofold blood, the blood of the covenant of circumcision and the blood of the Paschal lamb; therefore it is said, "I said unto thee, In thy (twofold) blood, live; yea, I said unto thee, In thy (twofold) blood, live" (ibid.).