Learn from Me, mighty-armed one, these five causes, the bringers-about of action, which the next verses will state. This is said to settle the mind in what follows and to show how things really stand. He praises these causes as worth knowing: in the Sankhya, the system in which the things worth knowing are reckoned up, that is, in Vedanta, called also 'the conclusion of action' (krtanta), since 'krta' means action and its end, its completion, is reached there, in this scripture which is the conclusion of action, these five are declared for the accomplishment of all actions. When knowledge of the self arises, all action ceases, as is shown by 'as much use as a well' and 'all action without exception, Partha, finds its fulfilment in knowledge'. So in this Sankhya, this conclusion of action, this Vedanta whose purpose is knowledge of the self, the five causes are declared for the accomplishment of all action. What are they? The Lord says.
Contemporary English rendering of the Sanskrit bhāṣya, pending scholar review.