Reference: The Prophet
(SAW) used to stop after burying the dead and say to the people: "Ask
Allah to forgive your brother and pray for him to be strengthened, for
indeed he is now being questioned." Abu Dawud 3/315, and Al-Hakim 1/370
who graded it authentic and Ath-Thahabi agreed.
“And they (polytheists, disbelievers in the Oneness of Allah and in His Messenger, Muhammad (saw) ) will not cease fighting you until they turn you back from your religion (Islamic Monotheism) if they can.”
