MUṆḌAKA UPANISHAD · 1.2.10

इष्टापूर्तं मन्यमाना वरिष्ठं
नान्यच्छ्रेयो वेदयन्ते प्रमूढाः ।
नाकस्य पृष्ठे ते सुकृतेऽनुभूत्वेमं
लोकं हीनतरं वा विशन्ति ॥ १०॥

iṣṭāpūrtaṃ manyamānā variṣṭhaṃ
nānyacchreyo vedayante pramūḍhāḥ ।
nākasya pṛṣṭhe te sukṛte’nubhūtvemaṃ
lokaṃ hīnataraṃ vā viśanti ॥ 10॥

Minds bewildered who hold the oblation offered and the well dug for the greatest righteousness and know not any other highest good, on the back of heaven they enjoy the world won by their righteousness and enter again this or even a lower world.

Sri Aurobindo · CWSA 18, p. 135