Adhyaya 34 — Madālāsā’s Instruction on Sadācāra (Householder Conduct, Purity, and Daily Rites)
आचामेत् पुत्र ! पुण्याभिः प्राङ्मुखोदङ्मुखोऽपि वा ।
अन्तर्जलादावसथाद्वल्मीकान्मूषिकस्थलात् ॥
ācāmet putra puṇyābhiḥ prāṅmukhodaṅmukho 'pi vā | antarjalād āvasathād valmīkān mūṣikasthalāt ||
O son, one should perform ācamana with pure water, facing east—or also facing north. One should avoid water from enclosed or standing pools, from dwellings, from ant-hills, and from places frequented by mice or rats.