Matsya Purana — Division of Bhārata-varṣa
काशिका सुकुमारी च मन्दगा मन्दवाहिनी कृपा च पाशिनी चैव शुक्तिमन्तात्मजास् तु ताः //
kāśikā sukumārī ca mandagā mandavāhinī kṛpā ca pāśinī caiva śuktimantātmajās tu tāḥ //
Kāśikā, Sukumārī, Mandagā, Mandavāhinī, Kṛpā, and Pāśinī—these indeed are the daughters of Śuktimant.
This verse does not discuss Pralaya; it catalogues sacred river-names as part of the Purana’s sacred-geography tradition.
By identifying holy rivers, it supports householders and rulers in organizing pilgrimages, vows, and meritorious bathing/charity rites connected with tīrthas—standard Purāṇic dharma practices.
Ritually, it points to tīrtha-oriented practices (snāna, tarpaṇa, dāna) performed at named rivers; architecturally, such listings often guide where ghāṭas, shrines, and pilgrimage infrastructure may be established, though no explicit Vāstu rule appears in this verse.