From Rāmānuja’s commentary
This clearly shows the unity of the operative (ruling or supervising) cause and the material cause
Definition
Brahman is the intelligent or operative agency responsible for producing and ordering the world, without requiring a separate external agent.
Related Brahman as Material Cause, Brahman · Śaṅkara, Brahman · Rāmānuja
Evidence from Śaṅkara, Rāmānuja and Madhva
Where the commentaries discuss this concept. Open a sūtra to read the commentary context.
From Rāmānuja’s commentary
This clearly shows the unity of the operative (ruling or supervising) cause and the material cause
From Rāmānuja’s commentary
the primâ facie view set forth in the earlier part of the Sûtra, 'Should it be said that (it is) not; on account of the observation of employment (of instruments).'
Milk, e.g. and water, which have the power of producing certain effects, viz. sour milk and ice respectively, produce these effects unaided.
From Madhva’s commentary
But this is not the case with Brahmau. His creation proceeds only in virtue of His essential power.
It is the dependent being (imperfect agent) that requires aids and means to work with. What should the absolute Lord require ? For He confers on the very means the virtue of being such (means).
From Madhva’s commentary
It is not right to hold that even the non-intelligent Pradhana may be active as in the case of milk curdling or water flowing, etc. For the Sruti says, that even there the activity is caused by the Lord
Śaṅkara
Advaita VedāntaFrom Śaṅkara’s commentary
From Śaṅkara’s commentary