Bhagavad Gita Chapter 18.28
ayuktaḥ prākṛtaḥ stabdhaḥ
śaṭho naiṣkṛtiko ’lasaḥ
viṣādī dīrgha-sūtrī ca
kartā tāmasa ucyate
Translation
The worker who is always engaged in work against the injunctions of the scripture, who is materialistic, obstinate, cheating and expert in insulting others, and who is lazy, always morose and procrastinating is said to be a worker in the mode of ignorance.