Study a single sutra by selecting the pada (chapter) and then the sutra (verse).
Source: English translation from Light on the Yoga Sutras of Patanjali (B.K.S. Iyengar)
When the sadhaka is firmly established in the practice of truth, his words become so potent that whatever he says comes to realization.
Source: How to Know God: The Yoga Aphorisms of Patanjali (Swami Prabhavananda, Christopher Isherwood)
When a man becomes steadfast in his abstention from falsehood he gets the power of obtaining for himself and others the fruits of good deeds, without having to perform the deeds themselves.