1 Chronicles 11:13-15

Young's Literal Translation

¹³ he hath been with David in Pas-Dammim, and the Philistines have been gathered there to battle, and a portion of the field is full of barley, and the people have fled from the face of the Philistines,

¹⁴ and they station themselves in the midst of the portion, and deliver it, and smite the Philistines, and Jehovah saveth -- a great salvation.

¹⁵ And three of the thirty heads go down on the rock unto David, unto the cave of Adullam, and the host of the Philistines is encamping in the valley of Rephaim,