William Secker says - (Ruth at the feet of Boaz)

"If Ruth lie at the feet of Boaz, her next remove may be into his bed. If you take the devil's cup into your hand, it is to be feared that you will quickly lift it to your head."
The Nonsuch Professor p.123

And when Boaz had eaten and drunk, and his heart was merry, he went to lie down at the end of the heap of corn: and she came softly, and uncovered his feet, and laid her down. And it came to pass at midnight, that the man was afraid, and turned himself: and, behold, a woman lay at his feet. And he said, Who art thou? And she answered, I am Ruth thine handmaid: spread therefore thy skirt over thine handmaid; for thou art a near kinsman.

Ruth 3:7-9