Example sentences:

Ramayana:  As the monkeys raced towards the ocean to find Sita, they realized that their meeting with Sampatti was no fluke; providence was guiding them in their service to Rama.  

Mahabharata:  The sages pointed out to Duryodhana that each time he had persecuted the Pandavas, they had emerged stronger — such repeated good fortune couldn’t be a fluke; God was with them.

Bhagavad-gita:  At the moment of death, remembrance of God won’t come to us by fluke; we need to cultivate his remembrance throughout our lives by practicing bhakti-yoga diligently.