भाववृत्त्या हि भावत्वं शून्यवृत्त्या हि शून्यता ।ब्रह्मवृत्त्या हि पूर्णत्वं तथा पूर्णत्वमभ्यसेत् ॥ १२९ ॥
In plain words
Run the mind on objects and you get objects. Run it on the void and you get blankness. Run it on Brahman and you get fullness — so practise fullness.
Close to the Sanskrit
By the mental mode of objects, indeed, objecthood; by the mental mode of the void, indeed, voidness; by the mental mode of Brahman, indeed, fullness — so one should practise fullness.