From the Bible:

In the passage preceding the one that we read last week, Jesus said:

I am the true vine, and my Father is the husbandman.

Every branch in me that beareth not fruit he taketh away: and every branch that beareth fruit, he purgeth it, that it may bring forth more fruit.

Now ye are clean through the word which I have spoken unto you.

Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me.

From the Bhagavad Gita, tenth Chapter:

Everyone in this world whose life is glorious, or prosperous, or powerful – know that his achievement is but a little spark from the great sun of My effulgence.