“Go and lie down,” he said to Samuel, “and if He calls you, say, ‘Speak, LORD, for Your servant is listening.’” So Samuel went and lay down in his place.
Jewish Publication Society of America Version (JPS1917) - 1 Samuel 3:9 >Therefore Eli said unto Samuel: 'Go, lie down; and it shall be, if thou be called, that thou shalt say: Speak, LORD; for Thy servant heareth.' So Samuel went and lay down in his place.