en_tn/rut/03/04.md

uncover his feet

This means to remove the cloak or blanket covering his feet so that they would be exposed to the cold. (See: rc://en/ta/man/translate/translate-symaction)

lie down there

"lie down at his feet"

Then he will tell you what to do

The specific custom of that time is unclear, but this is usually understood as a culturally acceptable way for a woman to tell a man that she was willing to marry him. Boaz would understand the custom and accept or reject her offer.

Then he will

"When he wakes up, he will"