Śrīmad-Bhāgavatam · Text 5.19.14
Who is speaking and story frame
यथैहिकामुष्मिककामलम्पट:
सुतेषु दारेषु धनेषु चिन्तयन् ।
शङ्केत विद्वान् कुकलेवरात्ययाद्
यस्तस्य यत्न: श्रम एव केवलम् ॥ १४ ॥
yathaihikāmuṣmika-kāma-lampaṭaḥ
suteṣu dāreṣu dhaneṣu cintayan
śaṅketa vidvān kukalevarātyayād
yas tasya yatnaḥ śrama eva kevalam
Materialists are generally very attached to their present bodily comforts and to the bodily comforts they expect in the future. Therefore they are always absorbed in thoughts of their wives, children and wealth and are afraid of giving up their bodies, which are full of stool and urine. If a person engaged in Kṛṣṇa consciousness, however, is also afraid of giving up his body, what is the use of his having labored to study the śāstras? It was simply a waste of time.
Read Śrīla Prabhupāda's purport on Vedabase.io