Aśauca-vidhi (Rules of Impurity) within Śrāddha-kalpa — Chapter on Testing/Selecting Brahmanas and Honoring the Atithi
अभ्यागतः पाकचारदतिथिः स्यादपावकः / अतिथेरतिथिः प्रोक्तः सो ऽतिथिर्योग उच्यते
abhyāgataḥ pākacāradatithiḥ syādapāvakaḥ / atitheratithiḥ proktaḥ so 'tithiryoga ucyate
L’hôte qui arrive à l’heure du repas est dit ‘apāvaka’; et l’hôte de l’hôte est déclaré l’atithi nommé ‘yoga’.