se chala se-kale krsna sphurabe tomare
krsna-krpa yanre, tare ke rakhite pare"
se chala—that trick; se-kale—at that time; krsna—Lord Krsna; sphurabe—will show; tomare—unto you; krsna-krpa—the mercy of Krsna; yanre—upon whom; tare—him; ke—who; rakhite—to keep; pare—is able.
"What kind of means you will have to use at that time will be revealed by Krsna. If one has Krsna's mercy, no one can check him."
Although Srila Raghunatha dasa was very anxious to join Sri Caitanya Mahaprabhu, the Lord advised him to wait for the mercy of Lord Krsna. He recommended that Raghunatha dasa keep his Krsna consciousness firmly fixed in his heart while externally behaving like an ordinary man. This is a trick for everyone advanced in Krsna consciousness. One can live in society like an ordinary human being, but at the same time one's own business should be to satisfy Krsna and spread His glories. A Krsna conscious person should not be absorbed in material things, for his only business is the devotional service of the Lord. If one is engaged in this way, Krsna will certainly bestow His mercy. As Sri Caitanya Mahaprabhu advised Raghunatha dasa: yatha-yogya visaya bhunja' anasakta hana. The same is repeated: antare nistha kara, bahye loka-vyavahara. This means that one must have no other desire within his heart than to serve Krsna. On the basis of such a conviction, one can cultivate Krsna consciousness. This is confirmed in the Bhakti-rasamrta-sindhu (1.2.200):
laukiki vaidiki vapi
ya kriya kriyate mune
sa karya bhaktim icchata
A devotee may act as an ordinary human being or as a strict follower of Vedic injunctions. In either case, everything he does is favorable for the advancement of devotional service because he is in Krsna consciousness.
Link to this page: http://prabhupadabooks.com/cc/madhya/16/241