Second Book of Kings (Author Compiled by Isaias from records of Samuel, David, Nathan, and Gad.)
13:4qui dixit ad eum quare sic adtenuaris macie fili regis per singulos dies cur non indicas mihi dixitque ei Amnon Thamar sororem Absalom fratris mei amo
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.