Musnad Ahmed: Hadith 4223

The Messenger of Allah (ﷺ) told us in Mina, when he was leaning back on a red tent, he said: “Would it not please you to be one quarter of the people of Paradise?" We said: Yes. He said: "Would it not please you to be one third of the people of Paradise?” We said: Yes. He said: “By Allah, I hope that you will be half of the people of Paradise, and I shall tell you about that, about the small numbers of the Muslims among the people on that Day. On that Day, among the people they will be like a white hair on the hide of a black bull, or a black hair on the hide of a white bull, and no one will enter Paradise except a Muslim soul.”