SB 6.5.23

nāśaṁ niśamya putrāṇāṁ
 nāradāc chīla-śālinām
anvatapyata kaḥ śocan
 suprajastvaṁ śucāṁ padam
Synonyms: 
nāśam — the loss; niśamya — hearing of; putrāṇām — of his sons; nāradāt — from Nārada; śīla-śālinām — who were the best of well-behaved persons; anvatapyata — suffered; kaḥ — Prajāpati Dakṣa; śocan — lamenting; su-prajastvam — having ten thousand well-behaved sons; śucām — of lamentation; padam — position.
Translation: 
The Haryaśvas, the sons of Prajāpati Dakṣa, were very well-behaved, cultured sons, but unfortunately, because of the instructions of Nārada Muni, they deviated from the order of their father. When Dakṣa heard this news, which was brought to him by Nārada Muni, he began to lament. Although he was the father of such good sons, he had lost them all. Certainly this was lamentable.
Purport: 

The Haryaśvas, the sons of Prajāpati Dakṣa, were certainly well-behaved, learned and advanced, and in accordance with the order of their father they went to perform austerities to beget good sons for their family. But Nārada Muni took advantage of their good behavior and culture to properly direct them not to be involved with this material world, but to use their culture and knowledge to end their material affairs. The Haryaśvas abided by the order of Nārada Muni, but when news of this was brought to Prajāpati Dakṣa, the prajāpati, instead of being happy with the actions of Nārada Muni, was extremely sorrowful. Similarly, we are trying to bring as many young men as possible to the Kṛṣṇa consciousness movement for their ultimate benefit, but the parents of the young men joining this movement, being very sorry, are lamenting and making counterpropaganda. Of course, Prajāpati Dakṣa did not make propaganda against Nārada Muni, but later, as we shall see, Dakṣa cursed Nārada Muni for his benevolent activities. This is the way of materialistic life. A materialistic father and mother want to engage their sons in begetting children, striving for improved economic conditions and rotting in materialistic life. They are not unhappy when their children become spoiled, useless citizens, but they lament when they join the Kṛṣṇa consciousness movement to achieve the ultimate goal of life. This animosity between parents and the Kṛṣṇa consciousness movement has existed since time immemorial. Even Nārada Muni was condemned, not to speak of others. Nevertheless, Nārada Muni never gives up his mission. To deliver as many fallen souls as possible, he continues playing his musical instrument and vibrating the transcendental sound Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/ Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare.