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.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
क्लेशभूर्यल्पसाराणि कर्माणि विफलानि वा । देहिनां विषयार्तानां न तथैवार्पितं त्वयि
kleśabhūryalpasārāṇi karmāṇi viphalāni vā | dehināṃ viṣayārtānāṃ na tathaivārpitaṃ tvayi
SB 8.5.47