One verse

Srimad Bhagavatam 11.17.41

11.17.41

प्रतिग्रहं मन्यमानस्तपस्तेजोयशोनुदम् । अन्याभ्यामेव जीवेत शिलैर्वा दोषद‍ृक् तयो: ॥ ४१ ॥

pratigrahaṁ manyamānas tapas-tejo-yaśo-nudam anyābhyām eva jīveta śilair vā doṣa-dṛk tayoḥ

pratigraham
accepting charity
manyamānaḥ
considering
tapaḥ
of one’s austerity
tejaḥ
spiritual influence
yaśaḥ
and fame
nudam
destruction
anyābhyām
by the other two (teaching Vedic knowledge and performing sacrifice)
eva
indeed
jīveta
a brāhmaṇa should live
śilaiḥ
by collecting rejected grains in the field
vā
or
doṣa
the discrepancy
dṛk
seeing
tayoḥ
of those two

A brāhmaṇa who considers that accepting charity from others will destroy his austerity, spiritual influence and fame should maintain himself by the other two brahminical occupations, namely teaching Vedic knowledge and performing sacrifice. If the brāhmaṇa considers that those two occupations also compromise his spiritual position, then he should collect rejected grains in agricultural fields and live without any dependence on others.