Manava Dharmashastra 3.96

3.96

sūpaghṛtadadhiśarkarādi yadutkṛṣṭamannaṃ tatsvayaṃ nāśnīyādatithau saṃnihite yāvattasmai na dattam | yattu āturasya yavāgūrasakaṭukādi tadanicchate na deyam | tādṛśamadattamaśnato na doṣaḥ | sarvathā na saṃskṛtamannaṃ svayaṃ bhoktavyam | kadannamatithirna bhojanīya ityevaṃparametat | dhanāya hitaṃ, dhanasya nimittaṃ veti dhanyam | evaṃ yaśasyādayaḥ śabdāḥ | arthavādo'yaṃ nityatvādatithibhojanasya, sati saṃnidhāne'titheḥ, pūrvaśeṣatvācca | stutitvenānvaye saṃbhavati nādhikārāntarakalpanā yuktā |

He himself should not eat what he does not offer to his guest. The honouring of guests is conducive to wealth, fame, longevity and heaven.—(106)

Medhātithi’s commentary (manubhāṣya):
Soup, butter, curds, sugar, and such other rich food, he himself should not eat, so long as he does not offer it to the guest that may have arrived. As for gruel and such other bitter medicinal drinks, he shall not offer these to him, if he does not desire it; there is no harm in the man taking these without offering them to the guest. All that this means is that he should uot himself eat rich food and offer to the guest poor fare.

‘Conducive to wealth’— procures, brings, wealth. Similarly, ‘conducive to fame,’ and so forth.

All this is purely laudatory; because the honouring of guests is a compulsory duty, if he happen to be there, and also because what is here said is clearly supplementary to the foregoing injunction (of guest-honouring). And so long us a passage can be taken as purely laudatory, there is no justification for taking it as putting forward another incentive.—(106)