Mishkat al-Masabih 298

Abu Huraira told of God’s messenger coming to the cemetery and saying, “Peace be upon you, believing ones, and if God will we shall join you. I wish we had seen our brethren.” He was asked, “Are we not your brethren, messenger of God?” and replied, “You are my companions; our brethren are those who have not yet been born.” They asked, “How will you recognise those members of your people who have not yet been born, messenger of God?” He said, “Tell me; supposing a man had horses with white blazes and white marks on their legs among horses which were pure black, would he not recognise his own horses?” They replied, “Certainly, messenger of God.” He said, “They will come with white faces and arms and legs owing to ablution, and I will arrive at the Tank before them.” Muslim transmitted it.