One verse

Srimad Bhagavatam 4.8.31

4.8.31

मुनय: पदवीं यस्य नि:सङ्गेनोरुजन्मभि: । न विदुर्मृगयन्तोऽपि तीव्रयोगसमाधिना ॥ ३१ ॥

munayah padavim yasya nihsangenoru-janmabhih na vidur mrgayanto ’pi tivra-yoga-samadhina

munayah
great sages
padavim
path
yasya
whose
nihsangena
by detachment
uru-janmabhih
after many births
na
never
viduh
understood
mrgayantah
searching for
api
certainly
tivra-yoga
severe austerities
samadhina
by trance.

Narada Muni continued: After trying this process for many, many births and remaining unattached to material contamination, placing themselves continually in trance and executing many types of austerities, many mystic yogis were unable to find the end of the path of God realization.