When Boaz had finished his meal and was feeling satisfied, he lay down to sleep at the far end of the grain heap. ¹  Then Ruth ²  crept up quietly, ³  uncovered his legs, ⁴  and lay down beside him. ⁵ 

So she slept beside him ¹  until morning. She woke up while it was still dark. ²  Boaz thought, ³  “No one must know that a woman visited the threshing floor.” ⁴