Śatapatha Brāhmaṇa ("of a hundred paths") 2.6.4.9

2.6.4.9

sa yasminhartāvamuṃ lokameti | sa enamṛtuḥ parasmā ṛtave prayacati para u parasmā ṛtave prayacati sa paramameva sthānam paramāṃ gatiṃ gacati cāturmāsyayājī tadāhurna cāturmāsyayājinamanuvindanti paramaṃ hyeva khalu sa sthānam paramāṃgatiṃ gacatīti

And in whatever season he goes to yonder world, that season passes him on to the next season, and that season again passes him on to the next season,--he who performs the Seasonal sacrifices reaches the highest place, the supreme goal. Wherefore it is said, 'They find not him that offereth the Seasonal offerings, for verily he goeth unto the highest place, to the supreme goal.'