Your repayment consists in not lapsing into ignorance over again but in continuing in the state of your real Self

Ramana Maharishi:  The Reality is alone and eternal. To understand it is good enough. But the old ignorance should not return. A good watch must be kept lest the present understanding of the Truth suffers later on. A disciple served a master a long time and realised the Self. He was in Bliss and wanted to express his gratitude to the master. He was in tears of joy and his voice choked when he spoke. He said, “What a wonder that I did not know my very Self all these years? I suffered  long and you so graciously helped me to realise the Self. How shall I repay your Grace? It is not in my power to do it!” The master replied: “Well, well. Your repayment consists in not lapsing into ignorance over again but in continuing in the state of your real Self.”