B.G 18.28
ayuktaḥ prākṛtaḥ stabdhaḥ śaṭho naiṣkṛtiko'lasaḥ। viṣādī dīrghasūtrī ca kartā tāmasa ucyate ॥28॥
A person who is uncoordinated, unrefined, stubborn, deceitful, malicious, lazy, despondent, procrastinating, and a grudge-holder is referred to as a 'tāmas', i.e. dark doer.
Gīta Bhāshya 18.28
He who points out a fault done by another, even if it was done long ago, is called a 'dīrghasūtrī', i.e. a grudge-holder.
parakṛtadoṣaṃ dīrghakālakṛtamapi anucitaṃ yaḥ sūcayati saḥ dīrghasūtrī।
A person who highlights the faults committed by others, even if they were committed a long time ago, is considered a "dīrghasūtrī", i.e. a grudge-holder.
"pareṇa yaḥ kṛto doṣaḥ dīrghakālakṛto'pi vā। yastasya sūcako doṣād dīrghasūtrī sa ucyate॥"
"He who points out a fault done by another, even if it was done long ago, is called a 'dīrghasūtrī' i.e. grudge-holder."
ityabhidhānāt॥
- stated thus in the dictionary.