One verse

Srimad Bhagavatam 10.64.41

10.64.41

विप्रं कृतागसमपि नैव द्रुह्यत मामका: । घ्नन्तं बहु शपन्तं वा नमस्कुरुत नित्यश: ॥ ४१ ॥

vipraṁ kṛtāgasam api naiva druhyata māmakāḥ ghnantaṁ bahu śapantaṁ vā namas-kuruta nityaśaḥ

vipram
a learned brāhmaṇa
kṛta
having committed
āgasam
sin
api
even
na
not
eva
indeed
druhyata
do not treat inimically
māmakāḥ
O My followers
ghnantam
striking physically
bahu
repeatedly
śapantam
cursing
vā
or
namaḥ-kuruta
you should offer obeisances
nityaśaḥ
always

My dear followers, never treat a learned brāhmaṇa harshly, even if he has sinned. Even if he attacks you physically or repeatedly curses you, always continue to offer him obeisances.