Prabhupada: So we have explained yesterday, buddhi-yoga. Buddhi-yoga means bhakti-yoga. So, svalpam apy asya dharmasya trayate mahato bhayat. Bhakti-yoga, begun, some way or other, it has got great effect.
There is story that in the Deity room, a lamp was burning. You know oil lamp has to be watched. Sometimes the wick has to be pushed. So the lamp was almost going to be extinguished. In the meantime, a rat came there. He thought that it is something eatable. So he touched with mouth the wick, and it became pushed. Simply by that action he got salvation. Just try to understand. Because he gave some service to the Deity.
So there are many instances. Svalpam apy asya dharmasya trayate mahato bhayat. Krishna consciousness business is so nice that whatever you do sincerely, it will never be lost.