question #3 Sahih al-Bukhari 6066, Book 78, Hadith 96 : What actions can promote brotherhood and unity among people according to Islamic teachings?

Allah’s Messenger (ﷺ) said, “Beware of suspicion, for suspicion is the worst of false tales. and do not look
for the others’ faults, and do not do spying on one another, and do not practice Najsh, and do not be
jealous of one another and do not hate one another, and do not desert (stop talking to) one another.
And O, Allah’s worshipers! Be brothers!”