Matsya Purana — Cosmic Architecture of Sun–Moon and the ‘Houses of the Gods’
भार्गवात्पादहीनश्च विज्ञेयो वै बृहस्पतिः बृहस्पतेः पादहीनौ केतुवक्रावुभौ स्मृतौ //
bhārgavātpādahīnaśca vijñeyo vai bṛhaspatiḥ bṛhaspateḥ pādahīnau ketuvakrāvubhau smṛtau //
In comparison with Bhārgava (Venus), Bṛhaspati (Jupiter) is to be understood as “lacking a quarter.” And relative to Bṛhaspati, both Ketu and Vakra are likewise remembered as “lacking a quarter.”
This verse is not about Pralaya; it belongs to an astrological/omen context, ranking or measuring grahas by a ‘pāda’ (quarter) deficiency relative to one another.
In Purāṇic statecraft and household dharma, such graha-lakṣaṇa teachings support choosing auspicious times and interpreting celestial signs for decisions like campaigns, consecrations, donations, or major rites.
Indirectly, it supports ritual timing: planetary assessments were used to select muhūrtas for temple rites, consecrations, and other ceremonies—though no specific Vāstu rule is stated in this verse.