One verse

Srimad Bhagavatam 7.13.4

7.13.4

पश्येदात्मन्यदो विश्वं परे सदसतोऽव्यये । आत्मानं च परं ब्रह्म सर्वत्र सदसन्मये ॥ ४ ॥

pasyed atmany ado visvam pare sad-asato ’vyaye atmanam ca param brahma sarvatra sad-asan-maye

pasyet
one should see
atmani
in the Supreme Soul
adah
this
visvam
universe
pare
beyond
sat-asatah
the creation or cause of creation
avyaye
in the Absolute, which is free from deterioration
atmanam
himself
ca
also
param
the supreme
brahma
absolute
sarvatra
everywhere
sat-asat
in the cause and in the effect
maye
all-pervading.

The sannyasi should always try to see the Supreme pervading everything and see everything, including this universe, resting on the Supreme.