“Brother-in-law! Long ago I taught this sacred Jñāna Yoga to the sun. It came down in succession to Manu and to Ikṣvāku, and through them the rājarṣis came to know it. After that, it perished in the world. To hand this imperishable yoga, which thus perished, back to the world, I Myself have had to bind Myself by a vow once again,” said Kṛṣṇa.