The mind is the ninth, and the understanding is the tenth. The Soul, which is infinite, is the eleventh. It is considered as the highest of all.
मनो नवममेषां तु बुद्धिस्तु दशमी स्मृता॥ एकादशस्त्वनन्तात्मा स सर्वः पर उच्यते।