TT #34 · Parshas Tazria · Aliyah 1 · Passuk 4
English: For thirty-three days she shall remain in the blood of her purification; she must not touch any consecrated thing or enter the sanctuary until her purification period is complete.
Chabad.org — Chumash, English translation + Rashi for Vayikra 12:4
Torah Temimah cites Yevamos 75a.
E-Daf — Yevamos 75a · Shas.org
English: The Torah expresses the prohibition with the language of “touching” to teach that the “touching” is through eating.
Textual interpretation
The final phrase explains the wording: although the Torah says “touch,” the prohibition in this context is understood as eating, not ordinary contact.