Al-Adab Al-Mufrad 406

'A'isha mentioned that the Messenger of Allah, may Allah bless
him and grant him peace, told her, "I can see you when you are angry or
pleased." She asked, "How do you see that, Messenger of Allah?" He replied,
"When you are pleased, you say, 'Yes, by the Lord of Muhammad.' But when
you are angry, you say, 'No, by the Lord of Ibrahim.'" She said that she
replied, "Yes, I only cut out your name."

'Imran ibn Abi Anas reported from a man of Aslam who was one of
the Companions of the Prophet, may Allah bless him and grant him peace,
that the Prophet, may Allah bless him and grant him peace, said, "Snubbing
a believer for a year is like spilling his blood."

Hisham ibn 'Amir al-Ansari, the cousin of Anas ibn Malik whose
father was killed in the Battle of Uhud, that he heard the Messenger of
Allah, may Allah bless him and grant him peace, say, "It is not lawful
for a Muslim to snub another Muslim for more than three nights. As long
as they are cut off from each other, they are turning away from the Truth.
The first of them to return to a proper state has his expiation for that
inasmuch as he was the first to return to a proper state. If they die while
they are cut off from each other, neither of them will ever enter the Garden.
If one of them greets the other and he refuses to return the greeting or
accept his greeting, then an angel returns the greeting to him and Shaytan
answers the other."