Ruth 3:8

At midnight; he did not discover her sooner, though she did not uncover his feet, being it seems in a deep sleep, as is usual after feasts, and she doing no more that her mother commanded her, and using no words or gestures which might provoke his lust; wherein she showed her temperance and modesty, and that what she did was only by her mother's instigation and advice, which plainly appeared from her desire expressed, Ruth 3:9, which he knew, she being a stranger, was unacquainted with. And this was the reason why Boaz was not in the least offended with her, but only commends her virtue, without any reflection upon her for this fact. Turned himself; from the place where he lay, he raised and turned himself towards the feet, to learn who or what was there. Or, he was troubled, or afraid, or wondered; for the Hebrew word being but once used, is diversely rendered. A woman lay at his feet; which he might understand, either by some glimmerings of light which were after midnight, which discovered her; or rather, by her voice, or out of her own mouth, who being asked, told him so much in general, before he made particular inquiry.