Garudapurana 1.67.9

1.67.9

tāsāṃ madhye trayaḥ śreṣṭhā vāmadakṣaiṇamadhyamāḥ /
vāmā somātmikā proktā dakṣiṇā ravisannibhā //

Among them, three are foremost: the left, the right, and the middle. / The left is declared to have the nature of the Moon; the right resembles the Sun;