Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
Whoever believes in Allah and the Last Day, let him speak goodness or remain silent. Whoever believes in Allah and the Last Day, let him honor his neighbor. Whoever believes in Allah and the Last Day (Apocalypse), let him honor his guest.
Source: Sahih Muslim 47, Grade: Sahih
In another narration, the Prophet said:
Whoever believes in Allah and the Last Day, let him not harm his neighbor.
Source: Sahih Bukhari 6110, Grade: Muttafaqun Alayhi
In another narration, the Prophet said:
Whoever believes in Allah and the Last Day (Apocalypse), let him uphold his family ties.
Source: Sahih Bukhari 5787, Grade: Sahih