One day, Aniruddha asked the Buddha how to attain enlightenment, and the Buddha gave him a sermon on eight ways to do this. The first was to observe the universe and this human world with the concepts of impermanence, suffering, selfishness and impurity. The second way was to observe that greed was the root of all suffering; only without greed could a person be emancipated and free. The third way was to get rid of all cravings; one should have a simple life and seek wisdom. The fourth way was to remaind diligent and overcome all idleness. The fifth way was to learn all knowledge and contribute one's knowledge to society. The sixth way was to provide material assistance and spiritual consolation to the poor and ignorant, without despising them. The seventh way was to live a simple life without being enslaved by one's five senses of sight, hearing, taste, smell and touch. The eighth way was to vow to redeem all living beings, not just oneself, from the suffering of the world.

After Aniruddha heard all this, he constantly pondered what the Buddha had said and finally found the path to enlightenment.

When the Buddha was about to pass away, he asked the disciples who were with him if they still had any questions. Aniruddha folded his hands together and said,"Buddha, we all believe in the Truth you have taught the universe and life. The world will change, but your teachings will never change." Upon hearing these words, the Buddha smiled and passed away.