Matsya Purana — Manvantaras
विषयो विषयित्वं च तदा ह्यर्थपदात्मकौ कालेन प्रापणीयेन भेदाश्च कारणात्मकाः //
viṣayo viṣayitvaṃ ca tadā hyarthapadātmakau kālena prāpaṇīyena bhedāśca kāraṇātmakāḥ //
At that stage, the “object” (viṣaya) and “objecthood” (viṣayitva) are indeed constituted by the ‘thing’ and its ‘designation’; and the differentiations that arise—through time as the factor that brings about attainment—are themselves of the nature of causes.
It frames worldly differentiation (bheda) as a time-driven causal process: distinctions arise through kāla and function as causes within the chain that supports manifestation (and, by implication, can be withdrawn in dissolution when distinctions subside).
By treating objects and their ‘object-ness’ as constructs shaped by time and causation, it encourages detachment and discernment—useful for rulers and householders to act ethically without being bound by transient distinctions of gain, status, and possessions.
No direct Vāstu or ritual rule is stated; the takeaway is conceptual: rituals and temple-works operate in time and rely on causal sequences (materials, names, measures), reflecting the verse’s emphasis on kāla and causation in producing distinctions.