SB 4.3.2

yadābhiṣikto dakṣas tu
 brahmaṇā parameṣṭhinā
prajāpatīnāṁ sarveṣām
 ādhipatye smayo ’bhavat
Synonyms: 
yadā — when; abhiṣiktaḥ — appointed; dakṣaḥ — Dakṣa; tu — but; brahmaṇā — by Brahmā; parameṣṭhinā — the supreme teacher; prajāpatīnām — of the Prajāpatis; sarveṣām — of all; ādhipatye — as the chief; smayaḥ — puffed up; abhavat — he became.
Translation: 
When Lord Brahmā appointed Dakṣa the chief of all the Prajāpatis, the progenitors of population, Dakṣa became very much puffed up.
Purport: 

Although he was envious and was inimical towards Lord Śiva, Dakṣa was appointed the chief of all Prajāpatis. That was the cause of his excessive pride. When a man becomes too proud of his material possessions, he can perform any disastrous act, and therefore Dakṣa acted out of false prestige. That is described in this chapter.