TT #253 · Parshas Shemini · Aliyah 7 · Passuk 44
Chabad.org — Vayikra Chapter 11 with Rashi
English: “You shall sanctify yourselves and be holy”: one who sanctifies himself a little is sanctified greatly, and sanctification begun below is met by sanctification from above.
Yoma 39b.
E-Daf.com — Yoma 39b (Tsurras Hadaf)
Middah and consequence — The Chazal applies the verse’s wording and structure to establish the stated teaching.
When a person sanctifies himself even a little, Heaven responds with greater sanctification.