Aśauca-vidhi (Rules of Impurity) within Śrāddha-kalpa — Chapter on Testing/Selecting Brahmanas and Honoring the Atithi
ये तु वृत्ते स्थिता नित्यं ज्ञानिनो ध्यानिनस्तथा / देवभक्ता महात्मानः पुनीयुर्दर्शनादपि
ye tu vṛtte sthitā nityaṃ jñānino dhyāninastathā / devabhaktā mahātmānaḥ punīyurdarśanādapi
Those who ever abide in righteous conduct—knowers and meditators, great souls devoted to the Devas—purify even by mere darśana, by their very sight.