Iyengar: When the sadaka is firmly established in the practice of truth, his words become so potent that whatever he says comes to fruition.
This is one of my favorite sutras because it reminds me of the magic that appeared in Autobiography of a Yogi, and perhaps has that kind of genie in bottle feel. But Iyengar’s commentary points out that truth must be integrated cellularly and not just in the mind. He uses the example when one says “I will never eat chocolate again”. Unless every cell in your body believes it, it will not be the truth.
Bryant: When one is established in truthfulness, one ensures the fruition of actions.
Bryant says that truthfulness “is cultivated by willpower, the determination never to tell a lie.” He also says this sutra can be interpreted to control actions. So if the yogi who is mastered this sutra says “Be virtuous”, the person will be virtuous. But the yogi only says this if the person is fit to do so.
Taimni: On being firmly established in truthfulness fruit (of action) rests on action (of the Yogi) only.
Taimni says the practice of “truthfulness develops and purifies Buddhi in a remarkable manner”. (Buddhi is intelligence – one of the three parts of the mind). One can feel this because as hard as it is to be truthful sometimes, when you are, calm often comes over you, unless of course you are dealing with the wrath of telling that truth.
Carrera: To one established in truthfulness, actions and their results become subservient.
Carrera says “The yogi achieves unity with truth”. And later he says “her thoughts, like feathers blown by the breese, are easily moved by every whisper of the Divine Will.”