lay a finger on

Mane (Îngilîzî)

1. (colloquial, idiomatic) To merely touch.
2. Used other than figuratively or idiomatically: see lay, a, finger, on: to finger

Hevwate

set on

Etîmolojî (Îngilîzî)

Ji Middle English mîras hatiye girtin:

In summary

From Middle English fynger on (hem) to leyn (“touch (someone) with hostile intent”).