Muhammad bin 'Abdullah al-Ansari محمد بن عبد الله بن المثني - الأنصاري · The Book on Jana''iz (Funerals)

"A funeral (procession) passed by the Messenger of Allah and they were praising him with good statements. So the Messenger of Allah said: 'Granted.' Then he said: 'You are Allah's witnesses on the earth.'"

The Messenger of Allah said: "Whoever has three that precede him (in death) while they did not reach the age of puberty, then they will be a well-fortified fortress for him against the Fire."