V'Ahavta Lereiacha Kamocha

(18) You shall not take vengeance or bear a grudge against someone from your nation. Love your fellow as yourself: I am Hashem.

(18) ואהבת לרעך כמוך YOU SHALL LOVE YOUR FELLOW MAN AS YOURSELF —Rabbi Akiva said: “This is a fundamental principle of the Torah” (Sifra, Kedoshim, Chapter 4 12; Talmud Yerushalmi Nedarim 9:3).

One should love each and every Jew with a "soul love." That means: One should have compassion on each Jew and on his possessions just like one has compassion on himself and his possessions for it says "and you shall love your fellow as you love yourself." The specific laws of this mitzvah are included in the general principle of the mitzvah, that a person should deal with his fellow just like he would deal with himself; to guard his possessions and protect them from any damage; and if speaking about him, he should speak of his praises; and take compassion for his honor; and not to elevate your honor on account of his humiliation...

There was another incident involving one non-Jew who came before Shammai and said to Shammai: Convert me on condition that you teach me the entire Torah while I am standing on one foot. Shammai pushed him away with the builder’s cubit in his hand. This was a common measuring stick and Shammai was a builder by trade. The same gentile came before Hillel. He converted him and said to him: "That which is hateful to you do not do to another; that is the entire Torah, and the rest is its interpretation. Go study."