Tarzan, Lord of the Jungle by Edgar Rice Burroughs

Ibn Jad waited three days in his menzil but no Galla guides arrived to lead him into the valley as Batando had promised, and so he sent Fejjuan once more to the chief to urge him to hasten, for always in the mind of Ibn Jad was the fear of Tarzan of the Apes and the thought that he might return to thwart and punish him.

He knew he was out of Tarzan's country now, but he also knew that where boundaries were so vague he could not definitely count upon this fact as an assurance of safety from reprisal. His one hope was that Tarzan was awaiting his return through Tarzan's country, and this Ibn Jad had definitely decided not to attempt. Instead he was planning upon moving directly west, passing north of the ape-man's stamping grounds, until he picked up the trail to the north down which he had travelled from the desert country.