Sahih al-Bukhari Book 78, Hadith 48
The Prophet (ﷺ) used to say, "O Muslim ladies! A neighbouress should not look down upon the present of
her neighbouress even it were the hooves of a sheep."
The Prophet (ﷺ) said, "By Allah, he does not believe! By Allah, he does not believe! By Allah, he does not believe!" It was said, "Who is that, O Allah's Messenger (ﷺ)?" He said, "That person whose neighbor does not feel safe from his evil."
Allah's Messenger (ﷺ) said, "Anybody who believes in Allah and the Last Day should not harm his neighbor, and anybody who believes in Allah and the Last Day should entertain his guest generously and anybody who believes in Allah and the Last Day should talk what is good or keep quiet. (i.e. abstain from all kinds of evil and dirty talk).