Brahma Purana 75.11

Brahmapurāṇa 75.11

yaṣṭā kratur yāny api sādhanāni
ṛtvikpradeśaṃ phaladeśakālāḥ
tvam eva śaṃbho paramārthatattvaṃ
vadanti yajñāṅgamayaṃ vapus te