Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 74
Sanskrit:
य: प्राप्य मानुषं लोकं मुक्तिद्वारमपावृतम् ।गृहेषु खगवत् सक्तस्तमारूढच्युतं विदु: ॥ ७४ ॥
ITRANS:
yaḥ prāpya mānuṣaṁ lokaṁmukti-dvāram apāvṛtamgṛheṣu khaga-vat saktastam ārūḍha-cyutaṁ viduḥ
Translation:
The doors of liberation are opened wide to one who has achieved human life. But if a human being simply devotes himself to family life like the foolish bird in this story, then he is to be considered as one who has climbed to a high place only to trip and fall down.