The northern gate is the Samâna (on-breathing), that is mind, that is Parganya (rain). Let a man meditate on that as celebrity and beauty. He who knows this, becomes celebrated and beautiful.
In plain words: The northern door of the heart is the breath that digests and balances, linked to the mind and to Parjanya, the god of rain. Whoever meditates on it this way becomes well known and beautiful.