SB 6.18.75
aradhyatma-pradam devam
svatmanam jagad-isvaram
ko vrnita guna-sparsam
budhah syan narake ’pi yat
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The ultimate goal of all ambitions is to become a servant of the Supreme Personality of Godhead. If an intelligent man serves the most dear Lord, who gives Himself to His devotees, how can he desire material happiness, which is available even in hell?
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
An intelligent man will never aspire to become a devotee to achieve material happiness. That is the test of a devotee. As Sri Caitanya Mahaprabhu teaches:
na dhanam na janam na sundarim
kavitam va jagad-isa kamaye
mama janmani janmanisvare
bhavatad bhaktir ahaituki tvayi
“O almighty Lord, I have no desire to accumulate wealth, nor do I desire beautiful women, nor do I want any number of followers. I only want Your causeless devotional service birth after birth.” A pure devotee never begs the Lord for material happiness in the shape of riches, followers, a good wife or even mukti. The Lord promises, however, yoga-ksemam vahamy aham: “I voluntarily bring everything necessary for My service.”