The third group is described in His words: “And those who came after them say, ‘Our Lord, forgive us and our brothers who preceded us in faith, and do not place in our hearts any rancor toward those who believe. Our Lord, You are truly Most Kind, Most Merciful.’” This is a supplication for their brethren in their absence.
The next verse is the prayer of Abraham, peace be upon him: “Our Lord, forgive me, my parents, and all the believers on the Day when the reckoning is set.” His phrase “and all the believers” is likewise a prayer for believers who are not present. Thus, praying for fellow believers unseen is part of the way of the messengers, peace be upon them.
We, too, do this in every prayer when each of us says: “Peace be upon us and upon the righteous servants of Allah.” This is a supplication, and the Prophet said, “When you say that, you have extended the greeting of peace to every righteous servant in heaven and on earth.” Therefore, when you say, “Peace be upon us and upon the righteous servants of Allah,” you are praying for your brothers in their absence.
1494 – Abū al-Dardāʾ, may Allah be pleased with him, reported that he heard the Messenger of Allah, peace and blessings be upon him, say: “No Muslim servant prays for his brother in his absence without an angel appointed over him saying, ‘Āmīn, and the same for you.’” Narrated by Muslim.