Śatapatha Brāhmaṇa ("of a hundred paths") 14.3.2.30

14.3.2.30

somo vai pravargyaḥ sarvam vai somaḥ sarvam pravargyaḥ sa yadabhiṣutastatpravṛkto yadunnītastadrucito yaddhutastatpinvito yadā vai somaḥ pinvate'thainaṃ sarve devāḥ sarvāṇi bhūtānyupayuñjanti pinvate ha vā asmai somo ya evametadveda na ha vā asyāpravargyeṇa kena cana yajñeneṣṭam bhavati ya evametadveda

The Pravargya, indeed, is Soma, for Soma is everything, and the Pravargya is everything: when it is poured out then it is the (Gharma) placed on the fire; when it is drawn (into the cups) then it is the burning-hot (Gharma); and when it is offered then it is the overflowing (Gharma);--but, indeed, when Soma overflows all the gods and all beings avail themselves thereof; and, verily, Soma overflows for him who thus knows this; and, verily, no sacrifice whatever is offered without the Pravargya for him who thus knows this.