Sufyan ibn Usayd al-Hadrami reported that he heard the Prophet,
may Allah bless him and grant him peace, say, "It is great treachery to
tell something to your brother so that he believes you when you are lying
to him."
"Fear Allah and put things right between
you," (8:1), Ibn 'Abbas said, "This is an injunction from Allah to
the believers to fear Allah and to put things right between them."
Ibn 'Abbas reported that the Messenger of Allah, may Allah bless him and grant him peace, said, "Do not dispute with your brother. Do not make fun of him. Do not make a promise to him and then break it."
Abu'd-Darda' reported that the Prophet, may Allah bless him and
grant him peace, said, "Shall I tell you a degree better than prayer, fasting
and sadaqa?" "Yes," they replied. He went to say, Improving a state of
friendship. Causing discord in a state of friendship is what shaves things
away."
