"Once there was a Brahmin who was a great devotee of Lord Krishna. He had no home & always used to wander in secluded areas. He was free of desire, lust, hatred, greed & used to live in a world of his own.
Lord Krishna became very happy with his devotion & asked him for a boon. Brahmin told Lord Krishna that he was desire less and he did not want anything, but Lord Krishna insisted for some boon to be granted to him as a reward of his devotion. At this Brahmin asked for a boon that ,whenever, he was in need of water & he felt thirsty, water may be provided to him. Lord Krishna granted him that boon & disappeared.
One day, Brahmin after walking for a long distance felt thirsty, but there was no trace of water. Then he remembered that the Lord Krishna had granted him a boon that he would find water at his desire. Suddenly, he saw a hunter dressed in torn rags accompanied by furious dogs, carrying water in a leather pouch and asked him, "Sir, would you like to have some water." Looking at the apparent impure condition of the hunter & being a staunch Brahmin (High caste), he felt repelled. He politely refused "No, Thank you". The hunter again approached him for the water, but in utter disgust & in anger the Brahmin told the hunter to go way and that he was not interested in the water. The hunter and the dogs disappeared. Witnessing this, he realized that it must be God, who disguised Himself and came to quench his thirst. He felt hurt how Lord Krishna could send water to him through an impure, Scheduled Caste person. How could Lord expect a Brahmin to accept and drink water from the impure leather bag?
Now Lord Krishna again appeared before the Brahmin, smiled and asked him 'Who was the hunter? Lord Krishna told the Brahmin that He had asked the Indra Devta (King of heaven) to fetch the water, who instead of water, had actually brought nectar to make you immortal, but on one condition to test whether you could see the Divinity in all. 'Hence I allowed him to do so'.
Brahmin understood how he had failed in the test. It was his Ego, which made him refuse the nectar, which came in the form of water and through Indra Devta.
So the moral of the story is that we should see the God/Divinity present in all beings & we should not discriminate with any body & love everyone equally."
Now all the religious texts & Bhagwat Gita also teaches us that we should love all beings equally as the God resides in everyone's heart & seeing the presence of that divinity present in all beings, we should not discriminate with any body & love everyone equally. Below verses of Bhagwat Gita explain that only:
"sarvasya chaham hridi sannivisto
mattah smritir jnanam apohanam cha
vedais cha sarvair aham eva vedyo
vedanta-krd veda-vid eva chaham" (Bhagwat Gita: Chapter Fifteen verse 15)
"Sri Krishna said: O Arjuna, I am seated in everyone’s heart, and from Me comes remembrance, knowledge and forgetfulness. By all the Vedas, I am to be known. Indeed, I am the compiler of Vedanta, and I am the knower of the Vedas."
Jai Sri Krishna