Matsya Purana — The Episode of Madhu and Kaiṭabha: Gunas
*मत्स्य उवाच विघ्नस्तपसि सम्भूतो मधुर्नाम महासुरः तेनैव च सहोद्भूतो ह्य् असुरो नाम कैटभः //
*matsya uvāca vighnastapasi sambhūto madhurnāma mahāsuraḥ tenaiva ca sahodbhūto hy asuro nāma kaiṭabhaḥ //
Lord Matsya said: From an obstruction that arose during austerity (tapas) was born the great asura named Madhu; and along with him, from that very same source, there also arose the asura named Kaiṭabha.
It frames cosmic disorder as emerging from a ‘vighna’ (obstruction) connected with tapas—introducing Madhu and Kaiṭabha as mythic forces that impede sacred austerity, a common motif in pralaya-era narratives.
Indirectly, it teaches that dharmic effort (tapas, discipline, vows) can attract obstacles; a king or householder must persist with steadiness, protection of sacred practice, and governance that removes ‘vighnas’ to sustain order.
No direct Vastu or temple rule is stated; ritually, the key takeaway is the concept of ‘vighna’—the standard reason rites include protective preliminaries (śānti, rakṣā, and obstacle-removal practices) before major observances.