manaḥ-prasādaḥ — satisfaction of the mind; saumyatvam — being without duplicity towards others; maunam — gravity; ātma — of the self; vinigrahaḥ — control; bhāva — of one’s nature; saṁśuddhiḥ — purification; iti — thus; etat — this; tapaḥ — austerity; mānasam — of the mind; ucyate — is said to be.