Narrated Aishah, Ummul Muminin: When Negus died, we were told that a light would be seen perpetually at his grave.

Narrated Ubaydullah ibn Khalid as-Sulami: The Messenger of Allah صلی اللہ علیہ وسلم made a brotherhood between two men, one of whom was killed (in Allah's path), and a week or thereabouts later the other died, and we prayed at his funeral). The Messenger of Allah صلی اللہ علیہ وسلم asked: What did you say? We replied: We prayed for him and said: O Allah, forgive him, and join him to his companion. The Messenger of Allah صلی اللہ علیہ وسلم said: What about his prayers since the time the other died, and his fasting since the time the other died--the narrator Shubah doubted the words, "his fasting--and his deeds since the time the other died. The distance between them is just like the distance between heaven and earth.