TT #50 · Parshas Tazria · Aliyah 1 · Passuk 7
English: He shall offer it before GOD and make expiation on her behalf; she shall then be pure from her flow of blood. Such are the rituals concerning a woman who bears a child, male or female.
Chabad.org — Chumash, English translation + Rashi for Vayikra 12:7
Torah Temimah’s printed reference is Niddah 18a; the quoted Gemara is located at Niddah 19a. This unit’s wording and locus are retained separately from TT #49.
Sefaria — Niddah 19a (vowelized text)
English: One might say only red is impure. Rabbi Abahu says the repeated “her blood” establishes four, while black is really red that has deteriorated.
Textual derivation
The Gemara explains how the plural wording broadens the list beyond ordinary red blood; black is counted as red that has darkened, yielding the additional recognized appearance rather than an unrelated substance.