Madhvaon Brahma Sūtra 4.1.9
Dvaita Vedānta
Sūtra
अचलत्वं चापेक्ष्य
acalatvaṃ cāpekṣya
Sūtra translation
And (the absence of mental distraction) depends also upon the body being in a state of rest.
For the Brahmandapurana says j “ If the body is at rest, there is rest for the mind also; if the body is in motion, (is restless), the mind too becomes restless."