Yoga Sutra 2.54 the senses assume as it were the nature of mind itself
Sūtra II.54
Dissociation is when the senses, disjoined from their respective objects, assume as it were the nature of mind itself
When there is no conjunction with their respective objects, they assume as it were the nature of mind itself. When mind is inhibited, the senses are inhibited like the mind, without needing any other means for their subjection. As when the royal bee rises, the swarm rises, and when it settles they settle, so when the mind is inhibited the senses are inhibited. This is dissociation.
Now what is dissociation (pratyāhāra)? He introduces the exposition by way of a question. It is withdrawing the senses from their respective objects which is (the true pratyāhāra) among all the others. Next are given its characteristics: Dissociation is when the senses, disjoined from their respective objects, assume as it were the nature of mind itself The word respective refers to the particular objects like sound which are the fields of the corresponding senses like the ear. Disjoined from their respective objects, the senses which in the men of meditation are withdrawn from their objects as a result of seeing the defects in them assume as it were the nature of mind itself This means that they partake, as it were, of the form of the mind of the yogin.
On this it is said: When mind is inhibited, the senses are inhibited like the mind, without needing any other means for their subjection to conquer them. They are inhibited simply by inhibition of the mind. As when the royal bee rises – the unusual rājānam at the end of the compound instead of rājam is a Vedic form – the swarm rises, and when it settles they settle, so when the mind is inhibited the senses are inhibited.