SB 8.5.47

kleśa-bhūry-alpa-sārāṇi
 karmāṇi viphalāni vā
dehināṁ viṣayārtānāṁ
 na tathaivārpitaṁ tvayi
Synonyms: 
kleśa — hardship; bhūri — very much; alpa — very little; sārāṇi — good result; karmāṇi — activities; viphalāni — frustration; — either; dehinām — of persons; viṣaya-artānām — who are eager to enjoy the material world; na — not; tathā — like that; eva — indeed; arpitam — dedicated; tvayi — unto Your Lordship.
Translation: 
Karmīs are always anxious to accumulate wealth for their sense gratification, but for that purpose they must work very hard. Yet even though they work hard, the results are not satisfying. Indeed, sometimes their work results only in frustration. But devotees who have dedicated their lives to the service of the Lord can achieve substantial results without working very hard. These results exceed the devotee’s expectations.
Purport: 

We can practically see how the devotees who have dedicated their lives for the service of the Lord in the Kṛṣṇa consciousness movement are getting immense opportunities for the service of the Supreme Personality of Godhead without working very hard. The Kṛṣṇa consciousness movement actually started with only forty rupees, but now it has more than forty crores worth of property, and all this opulence has been achieved within eight or ten years. No karmī can expect to improve his business so swiftly, and besides that, whatever a karmī acquires is temporary and sometimes frustrating. In Kṛṣṇa consciousness, however, everything is encouraging and improving. The Kṛṣṇa consciousness movement is not very popular with the karmīs because this movement recommends that one refrain from illicit sex, meat-eating, gambling and intoxication. These are restrictions that karmīs very much dislike. Nonetheless, in the presence of so many enemies, this movement is progressing, going forward without impediments. If the devotees continue to spread this movement, dedicating life and soul to the lotus feet of Kṛṣṇa, no one will be able to check it. The movement will go forward without limits. Chant Hare Kṛṣṇa!