II.42 santosāt anuttamah sukhalābhah “From contentment and benevolence of consciousness comes supreme happiness.’ Through cleanliness of the body, contentment is achieved. Together they ignite the flame of tapas [self-discipline/ burning zeal] propelling the sādhaka towards the fire of knowledge. This transformation, which indicates that the sādhaka is on the right path of concentration, enables him to look inward through Self-study (svādhāya) and then towards Godliness.” Yogācārya B.K.S. Iyengar, Light on the Yoga Sutras of Patañjali, translation and commentary on Sūtra II.42