Sunita had veered off the path because he was afraid he would pollute the bhikkhus. He could not have guessed the Buddha would follow him. Sunita knew that the sangha included many men from noble castes. He was sure that polluting a bhikkhu was an unforgivable act. He hoped the Buddha and bhikkhus would leave him and return to the road. But the Buddha did not leave. He walked right up to the water’s edge and said, “My friend, please come closer so we may talk.” Sunita, his palms still joined, protested, “Lord, I don’t dare!” “Why not?” asked the Buddha. “I am an untouchable. I don’t want to pollute you and your monks.” The Buddha replied, “On our path, we no longer distinguish between castes. You are a human being like the rest of us. We are not afraid we will be polluted. Only greed, hatred, and delusion can pollute us. A person as pleasant as yourself brings us nothing but happiness. What is your name?” “Lord, my name is Sunita.”
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"Majesty, in the Way of Liberation, there is no caste. To the eyes of an enlightened person, all people are equal. Every person’s blood is red. Every person’s tears are salty. We are all human beings. We must find a way for all people to be able to realize their full dignity and potential. That is why I welcomed Sunita into the sangha of bhikkhus.”
Old Path White Clouds: Walking in the Footsteps of the Buddha (Thich Nhat Hanh)