Aśauca-vidhi (Rules of Impurity) within Śrāddha-kalpa — Chapter on Testing/Selecting Brahmanas and Honoring the Atithi
न वक्तव्यं सदा विप्र क्षुधिते नास्ति किञ्चन / तस्मै सत्कृत्य दातव्यं सदापचितिरेव सः
na vaktavyaṃ sadā vipra kṣudhite nāsti kiñcana / tasmai satkṛtya dātavyaṃ sadāpacitireva saḥ
O vipra, do not always tell the hungry, “There is nothing.” Honor him and give—this alone is enduring reverence.