Lord Brahmā said: O best of the demigods, unfortunately, because of madness resulting from your material opulence, you failed to receive Bṛhaspati properly when he came to your assembly. Because he is aware of the Supreme Brahman and fully in control of his senses, he is the best of the brāhmaṇas. Therefore it is very astonishing that you have acted impudently toward him.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
ब्रह्मोवाच । अहो बत सुरश्रेष्ठा ह्यभद्रं वः कृतं महत् । ब्रह्मिष्ठं ब्राह्मणं दान्तमैश्वर्यान्नाभ्यनन्दत
brahmovāca | aho bata suraśreṣṭhā hyabhadraṃ vaḥ kṛtaṃ mahat | brahmiṣṭhaṃ brāhmaṇaṃ dāntamaiśvaryānnābhyanandata
SB 6.7.21