SB. Text 1.2.9

All occupational engagements (dharma) are certainly meant for ultimate liberation. They should never be performed for material gain. Furthermore, according to sages, one who is engaged in the ultimate occupational service should never use material gain to cultivate sense gratification.

  SB Text 1.2.10

Life’s desires should never be aimed at gratifying the senses. One should desire only a healthy life, or self-preservation, since human life enables one to inquire into the subject matter of the Absolute Truth. This should be the goal of all one’s works.

The Sanskrit of verse SB 1.2.9 contains the word “apavargyasya” and in SB 7.13.25, chapter  13 being titled “The Behaviour of a Perfect Person”, and elsewhere, Srila Prabhupada gives a memorable explanation of the opposite term “pavarga”  as follows:

“….one may cultivate knowledge by which to become free from the evolutionary process and be reinstated in one’s original spiritual life.This is called apavarga, or liberation.

Material life is called pavarga because here we are subject to five different states of suffering, represented by the letters pa, pha, ba, bha and ma. Pa means parisrama, very hard labor. Pha means phena, or foam from the mouth. For example, sometimes we see a horse foaming at the mouth with heavy labor. Ba means byarthata, disappointment. In spite of so much hard labor, at the end we find disappointment. Bha means bhaya, or fear. In material life, one is always in the blazing fire of fear, since no one knows what will happen next. Finally ma means mrityu, or death. When one attempts to nullify these five different statuses of life–pa, pha, ba, bha and ma–one achieves apavarga, or liberation from the punishment of material existence.”