Islam called for improving morals and speaking kindness to people; Our master, the Messenger of God, peace and blessings be upon him, said: “Create people with a good character.” [Al-Tirmidhi narrated it], and he, peace be upon him, said: “A good word is charity.” [Agreed upon] Harming and assaulting, even with a word or look, is forbidden, and the Almighty said: {..and do not transgress, for God does not like the aggressors}. [The Cow: 190
He also decided that the comparison between people is a divine criterion, far from their appearances and the abundance of their wealth. Rather, it is the purity of their hearts, their fear of their Lord, Glory be to Him, and their sincerity in their words and actions. your hearts and your deeds. [Narrated by Muslim] It is appropriate for a Muslim to share his joy with his brother by making him happy, and reward his kindness and generosity with kindness, and respond to kindness with good words and good invitations, not with deadly mockery and hateful bullying; Our master, the Messenger of God, peace and blessings be upon him, says: “Whoever comes to you a favor, reward him, and if you do not find it, pray for him until you know that you have rewarded him.” [Abu Dawud] [Reported by al-Tabarani]