As soon as the Bodhisatta was born, he firmly put his feet on the ground; then he walked seven steps north and, with a white sunshade held over him, examined each of the cardinal points. He spoke the words of the Leader of the Flock: “I am the Supreme in the world, I am the best in the world, I am the first in the world; This is my last birth, there will be no more renewal of being in future lives”.
(Bodhisatta: Future Buddha, someone destined to achieve unsurpassed and perfect enlightenment; more specifically, it is the term that the Buddha uses to refer to himself in the period before his enlightenment, both in his past lives and in his last life before he achieved enlightenment).
From MN. 123; cf. DN. 14