First Book of Kings (Author Compiled by Isaias from records of Samuel, David, Nathan, and Gad.)
Chapter 24
3And he came to the sheepcotes which were in his way. And there was a cave, into which Saul went, to ease nature: now David and his men lay hid in the inner part of the cave.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.