One verse

Srimad Bhagavatam 11.18.6

11.18.6

स्वयं सञ्चिनुयात् सर्वमात्मनो वृत्तिकारणम् । देशकालबलाभिज्ञो नाददीतान्यदाहृतम् ॥ ६ ॥

svayaṁ sañcinuyāt sarvam ātmano vṛtti-kāraṇam deśa-kāla-balābhijño nādadītānyadāhṛtam

svayam
himself
sañcinuyāt
should gather
sarvam
everything
ātmanaḥ
his own
vṛtti
sustenance
kāraṇam
facilitating
deśa
the particular place
kāla
the time
bala
and one’s strength
abhijñaḥ
understanding pragmatically
na ādadīta
should not take
anyadā
for another time
āhṛtam
provisions

The vānaprastha should personally collect whatever he requires for his bodily maintenance, carefully considering the time, place and his own capacity. He should never collect provisions for the future.