One verse

Srimad Bhagavatam 5.19.14

5.19.14

यथैहिकामुष्मिककामलम्पट: सुतेषु दारेषु धनेषु चिन्तयन् । शङ्केत विद्वान् कुकलेवरात्ययाद् यस्तस्य यत्न: श्रम एव केवलम् ॥ १४ ॥

yathaihikamusmika-kama-lampatah sutesu daresu dhanesu cintayan sanketa vidvan kukalevaratyayad yas tasya yatnah srama eva kevalam

yatha
as
aihika
in the present life
amusmika
in the expected future life
kama-lampatah
a person who is very attached to lusty desires for bodily enjoyment
sutesu
children
daresu
wife
dhanesu
wealth
cintayan
thinking about
sanketa
is afraid
vidvan
a person advanced in spiritual knowledge
ku-kalevara
of this body, which is full of stool and urine
atyayat
because of loss
yah
anyone
tasya
his
yatnah
endeavors
sramah
a waste of time and energy
eva
certainly
kevalam
only

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 Krsna consciousness, however, is also afraid of giving up his body, what is the use of his having labored to study the sastras? It was simply a waste of time.