A Brahmā. When the Buddha was once staying at Ukkaṭṭha in the Subhagavana, he read the thoughts of Baka, who had conceived the idea that this world was permanent and free from decay and death; and the Buddha visited him in order to point out his error.
Baka welcomed the Buddha but, owing to the influence of Māra, refused to acknowledge his error, until the Buddha, by the exercise of his magical power, prevented Baka from disappearing from sight, while he himself dissolved into complete darkness. The Buddha then proceeded to tell him of four incidents connected with his previous birth as Kesava. MN.i.326ff. SN.i.142ff.