Abu Huraira reported: The Prophet (ﷺ) said:
“Whoever believes in Allah and the Last Day, let him not harm his neighbor. Whoever believes in Allah and the Last Day, let him honor his guest. Whoever believes in Allah and the Last Day, let him speak goodness or remain silent.”

Source: Ṣaḥīḥ al-Bukhārī 6136, Grade: Muttafaqun Alayhi