Sa.Sm 13
bhuktaśeṣaṁ bhagavato bhr̥tyātithipurassaraḥ। bhuñjīta hr̥dgataṁ viṣṇuṁ smaraṁstadgatamānasaḥ। ācamya mūlamantreṇa koṣṭhaṁ svamabhimantrayet ॥13॥
Give the offered food to guests. Then, eat food thinking of satisfied lord Vishnu. Conclude eating the food by doing 'āchamana' and chanting the eight-letter mantra.
Remeber the lord with following verse:
eko viṣṇurmahadbhūtam prathagbhūtānyanekaśaḥ। trīn lokān vyāpya bhūtātma bhuṅkte viśvabhugavyayaḥ॥
One lord Vishnu, the great being, eats the individual beings, in multiyude. This lord, the soul of beings, pervades the three worlds, and is the imperishable enjoyer of the universe!
With following Gayatri Vyahriti, sprinkle water on the food:
॥ oṁ bhūrbhuvaḥsvaḥ ॥
Then pray to food chanting following mantra:
oṁ svādo pito madho pito vayaṁ tvā vavr̥mahe। asmākamavitā bhava॥
Oh! sweetness my father, Oh honey, my father, We seek your protection. Become our protector!
Sprinkle water around the food chanting the following mantra:
oṁ satyaṁtarthena pariṣiñcayāmi।
Om! to realise truth, I imbue.
Then chanting following mantras, offer food to the respective entities by placing food to your right side.
citrāya svāhā। citraguptāya svāhā। yamāya svāhā। yamadharmarājāya svāhā। sarvabhuutebhyaḥ svāhā।
Offering to Chitra, a celestial being associated with creativity or artistic skills. Offering to Chitragupta, the celestial scribe who keeps records of human actions. Offering to Yama, the god of death. Offering to Yama Dharmaraja, another name for Yama, emphasizing his role as the ruler of dharma. Offering to all beings, expressing reverence and acknowledgment of the interconnectedness of all life.
Pour waterinto your right hand chanting the following mantra:
antaścarati bhūteṣu guhāyāṁ sarvatomukhaḥ। tvaṁ yajñastvaṁ vaṣaṭkārastvaṁ viṣṇuḥ puruṣaḥ paraḥ॥
That lord Vishnu, the supreme being, moven within every living being secretly, and is the face of all. He is situated in the Yajna, the sacrifice, and the sacred syllable 'Vashatkara'.