There are three gates leading to this hell—lust, anger and greed. Every sane man should give these up, for they lead to the degradation of the soul.
(Bhagavad-Gita---14:17---translation).

A person is too much attached to a certain kind of work or to the result because he has too much attachment for materialism or hearth and home, wife and children. Such a person has no desire for higher elevation in life. He is simply concerned with making this world as materially comfortable as possible. He is generally very greedy, and he thinks that anything attained by him is permanent and never to be lost. Such a person is envious of others and prepared to do anything wrong for sense gratification. Therefore such a person is unclean, and he does not care whether his earning is pure or impure. He is very happy if his work is successful and very much distressed when his work is not successful. Such is the worker in the mode of passion.
(Bhagavad-Gita---16:23---purport).

The worker who is attached to work and the fruits of work, desiring to enjoy those fruits, and who is greedy, always envious, impure, and moved by joy and sorrow, is said to be in the mode of passion.
(Bhagavad-Gita---18:27---translation).

Human civilizations should depend on the production of material nature without artificially attempting economic development to turn the world into a chaos of artificialgreed and power only for the purpose of artificial luxuries and sense gratification. This is but the life of dogs and hogs.
(Srimad Bhagavatam---1:10:4---purport).

The present population is more or less influenced by the modes of passion and ignorance, and the symptoms for such influence are exhibited in their becoming very lusty and greedy.
(Srimad Bhagavatam---1:15:12---purport).

One should not be gluttonous to satisfy the tongue. Grains, fruits, milk and similar foods are allotted for human consumption. One should not be excessively eager to satisfy the tongue and eat that which is not meant for humanity. Particularly, a devotee should eat only prasāda, or food which is offered to the Personality of Godhead. His position is to accept the remnants of those foodstuffs. Innocent foods like grains, vegetables, fruits, flowers and milk preparations are offered to the Lord, and therefore there is no scope for offering foods which are in the modes of passion and ignorance. A devotee should not be greedy. It is also recommended that the devotee should be muni, or thoughtful; he should always think of Kṛṣṇa and how to render better service to the Supreme Personality of Godhead.
(Srimad Bhagavatam---3:27:8---purport).

As long as one is affected by the modes of material nature, especially by rajas and tamas, he will be very greedy and lusty and will therefore engage in hard tasks, laboring all day and night. Such false egoism carries one from one species of life into another perpetually, and there is no rest in any species of life.
(Srimad Bhagavatam----4:20:29---purport).

The conditioned soul is always attracted by the external energy. Therefore he is subjected to lust and greed, and he suffers under the conditions of material nature. The Lord's causeless mercy toward His devotee is the only means by which to get out of material existence.
(Srimad Bhagavatam---7:9--summary).