Parashas Metzora · Passuk 14:06
Chabad.org — English translation + Rashi
Torah Temima points to Sotah 16b (verified on the daf).
E-Daf.com — Tsurras Hadaf (size=3)
HebrewBooks / Shas PDF of the daf
English: “In the blood of the bird” — one might think blood without water; therefore it says “in the water.” One might think water without blood; therefore it says “in the blood.” How so? He brings water in which the bird’s blood is still recognizable — a revi’is.
Heqesh / measure
Chazal require a mixture of blood and living water in which the blood remains visible, measuring a revi’is.