1 Kings 11:21

And when Hadad heard in Egypt that David slept with his
fathers
Was dead and buried, as the death of princes is soon known in other countries, and especially a king of such fame as David:

and that Joab the captain of the host was dead:
whose name might be terrible to Hadad, because of the slaughter of men he had made in his country:

Hadad said unto Pharaoh, let me depart, that I may go to mine own
country;
with a view and an hope to recover it, now David and Joab were dead.