Read Ruth 3:4 Using Other Translations
And it shall be, when he lieth down, that thou shalt mark the place where he shall lie, and thou shalt go in, and uncover his feet, and lay thee down; and he will tell thee what thou shalt do.
But when he lies down, observe the place where he lies. Then go and uncover his feet and lie down, and he will tell you what to do."
Be sure to notice where he lies down; then go and uncover his feet and lie down there. He will tell you what to do.”