Agniveshyagrihyasutra 2.6.3.133

2.6.3.133

anutīrtham apa utsiñcanti ūrjaṃ vahantīramṛtaṃ ghṛtaṃ payaḥ kīlālaṃ parisrutaṃ svadhā stha tarpayata me pitṝn tṛpyata tṛpyata iti .. nārdravāsā naikavastro daivatāni karmāṇyanusaṃcaret \

Along the sacred spot they pour out water [with the formula]: "Bearing nourishment, nectar, clarified butter, milk, sweet drink, [and] flowing liquor, you are svadhā; gratify my ancestors! Be gratified, be gratified!" One should not perform rituals for the deities wearing wet clothes, nor wearing only a single garment.