Buddhism

Absence of selflessness
Oneself and others are not separated two.

Avatamska Sutra & Saddharma-Pundarika

Comparing oneself to others in such terms as “Just as I am so are they, just as
they are so am I,” he should neither kill nor cause others to kill.

Sutta Nipata 705

All tremble at violence; all fear death. Putting oneself in the place of another, one should not kill nor cause another to kill.

Dharmatrata 129

Christianity

Love your neighbor as yourself

Matthew 22:39

Hinduism

Never do to others what would pain you

Panchatantra 3.104

Islam

Do unto all people as you would they should do to you.

Mishkat-al-Masabih  [A Niche for Lamps]

And do not argue with the People of the Scripture except in a way that is best, except for those who commit injustice among them, and say, “We believe in that which has been revealed to us and revealed to you. And our God and your God is one; and we are Muslims [in submission] to Him.”

Quran 29:46

Judaism

Do not get equal with one who has done you wrong, or keep hard feelings against the children of your people, but have love for your neighbor as for yourself: I am the YHVH. 

Leviticus, 19:18

What is hateful to you do not do to your neighbour.

Talmud, Shabbat, 31a

Words of People

“Like the bee gathering honey from the different flowers, the wise person accepts the essence of different scriptures and sees only the good in all religions.” 

Mahatma Ghandi