"Abusing a Muslim is Fusuq (an evil doing) and killing him is Kufr (disbelief)."

- The Sahih Bukhari Hadeeth

Abu Hurayra said that the Messenger of Allah, may Allah bless him and grant him peace, said,

"Our Lord, the Blessed and Exalted, descends every night to the heaven of this world when the last third of the night is still to come and says, 'Who will call on Me so that I may answer him? Who will ask Me so that I may give him? Who will ask forgiveness of Me so that I may forgive him?' "

- A Imam Mailk's Muwatta Hadeeth

Al-Bara' b. 'Azib reported that Allah's Messenger (in may peace be upon him) commanded a person (in these words):

"When you go to bed during night, you should say:

' O Allah, I surrender myself to Thee and entrust my affair to Thee, with hope in Thee and fear of Thee. There is no resort and no deliverer (from hardship but Thou). I affirm my faith in the Book which Thou revealed and in the Messengers whom Thou sent.'

If you die in this state you would die on Fitra (Islam) "