"Both- the dirty and clean river are equal " - Sri Ramakrishna

Sri Swami Vishwananda: Maybe you have heard of Ramakrishna, an Indian Saint.
During His time, one day a beggar came in front of the Kali Temple and, while
standing in front of the temple, he just chanted one mantra and the whole temple started to move.
Another man was looking and, when he saw that the beggar had such power, he started running after him.
When the beggar saw that this man was running after him, he started to run even faster.
After a while, when the beggar saw that this man was still behind him, he stopped and said “What do you want?”
The man replied “I saw that just by standing and praying in front of the temple, you made the whole temple move.
So, for sure, you are a great person and I would like to learn from you and to become your disciple.”
The beggar said, “No, I don’t want you. Go away!” but the man kept bugging him and saying, “Hey, I want, I want, I want!”
Then the beggar finally told him, “OK, do you want to be my disciple? Fine!
Do you see this river here and do you see that river over there?”
One river was dirty and the other river was clean and the Saint said
to the man “Come to me when both of these two rivers seem alike for you!”

Here is a video about Sri Ramakrishna: Sri Ramakrishna's life