In plain words
The wing on the left is Satya, the body is Mahat-tattva, the tail is yoga. So Buddhi is not made of one part alone. It is made of Ṛta, Satya, Mahat-tattva and yoga. Buddhi is no ordinary thing. Only when it is made up of so many kinds of limbs does it attain its full form. In the time of Vikramāditya, he held an assembly of great scholars. 'Here, is śraddhā the chief thing, is Buddhi the chief thing, or is medhā the chief thing? You must make this clear and tell me,' he said. If Buddhi lacks śraddhā, which is its head, there is no use in it at all. In this assembly of scholars many spoke, in many ways. At the very end they said the power of medhā is the great thing. Vikramāditya was troubled by the scholars' answer and thought, 'They could not give the right answer to this!'
'Āstha, svāstha … may be; medhā is of no use; with no āstha and śraddhā, what use is there?'
'O scholars! Āstha means an interest. Svāstha means a steadiness. So medhā without interest and steadiness is of no use,' he said. Many may be much given to medhā, but without śraddhā what can they achieve with that power of medhā? If there is no steadiness at all upon this power of medhā, they cannot achieve any task. Only when śraddhā and steadiness are both there does interest become steady. So, first of all, Buddhi is that very thing in which these two, interest and steadiness, come together. So for man to rely only on cleverness and to live trusting cleverness alone is mere madness. We must develop boundless interest in this. We must shape that interest into steadiness. Only then can man achieve any task with ease.
That is why Vedānta said, 'Śraddhāvān labhate jñānam.' Without śraddhā we cannot gain success or joy even in so small a task. When even an atom of fire comes into our hands, if there is śraddhā, we can make it grow great by putting fuel on it or by other means. Even if you bring a whole basketful of live coals to a man who has no śraddhā, he may put them out through lack of śraddhā. Bring the tiny seed of the banyan, bury it with śraddhā and tend it with great śraddhā, and it grows into a mighty tree.