It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) went to the graveyard, and said:“Peace be upon you, O people of the believers! And if Allah wills, we shall join you. I wished that I could see my brothers.”So the Companions (may Allah be pleased with them) said: O Messenger of Allah (peace and blessings be upon him)! Are we not your brothers? He said:“Rather, you are my companions, and my brothers are those who have not yet come into the world, and I will be their forerunner at the Pond of Kawthar on the Day of Resurrection.”Then the Companions (may Allah be pleased with them) said: O Messenger of Allah (peace and blessings be upon him)! How will you recognize those people on the Day of Resurrection who will be born in your Ummah after you? The Messenger of Allah (peace and blessings be upon him) said:“Tell me, if a man has horses with white faces and white feet among pure black horses, will he not recognize his own horses?”The Companions (may Allah be pleased with them) said: He will recognize them. Then the Messenger of Allah (peace and blessings be upon him) said:“On the Day of Resurrection, my brothers will come, their faces and feet will be shining due to ablution, and I will be their forerunner at the Pond of Kawthar. So let it not be that someone is turned away from my Pond as a stray camel is turned away from its owner. I will call out to them: Come here, come here, come here. It will be said to me: These people changed your Sunnah after you. Then I will say: Away with them, away with them, away with them.”