Manava Dharmashastra 3.103

3.103

naikagrāmīṇam atithiṃ vipraṃ sāṅgatikaṃ tathā
upasthitaṃ gṛhe vidyād bhāryā yatrāgnayo 'pi vā //

One must not consider as a guest a Brahmana who dwells in the same village, nor one who seeks his livelihood by social intercourse, even though he has come to a house where (there is) a wife, and where sacred fires (are kept).