Śatapatha Brāhmaṇa ("of a hundred paths") 9.2.3.27

9.2.3.27

svaryanto nāpekṣante | ā dyāṃ rohanti rodasī iti na haiva te 'pekṣante ye svargaṃ lokaṃ yanti yajñaṃ ye viśvatodhāraṃ suvidvāṃso vitenira ityeṣa eva yajño viśvatodhāra eta u eva suvidvāṃso ya etaṃ vitanvate

'The heaven-going look not round, they ascend the heaven, the two worlds,'--those who go to the heavenly world do not indeed look round; 'the wise who performed the all-sustaining sacrifice,'--for that sacrifice is indeed all-sustaining, and they who perform it are indeed wise.