TT #220 · Parshas Shemini · Aliyah 7 · Passuk 38
Chabad.org — Vayikra Chapter 11 with Rashi
English: “When a person gives”: it is written in a form that can be read both as active giving and as being given; both teach that the contact must be pleasing to the owner.
Kiddushin 59b.
E-Daf.com — Kiddushin 59b (Tsurras Hadaf)
Textual interpretation — The Chazal derives the stated rule from the wording and structure of the verse.
The qualifying wetting must be acceptable to the owner.