Loke Sutta. Doṇa notices the footprints of the Buddha on the road between Ukkaṭṭhā and Setavyā, and, following them, comes upon the Buddha. Doṇa asks the Buddha who he is – Deva, Yakkha, Gandhabba, etc.? – and the Buddha explains to him that he is a “Buddha.” AN.ii.37f.