Musailama-al-Kadhdhab (i.e. the liar) came in the life-time of Messenger of Allah ﷺ with many of his people (to Medina) and said, "If Muhammad makes me his successor, I will follow him." Messenger of Allah ﷺ went up to him with Thabit bin Qais bin Shams; and Messenger of Allah ﷺ was carrying a piece of a datepalm leaf in his hand. He stood before Musailama (and his companions) and said, "If you asked me even this piece (of a leaf), I would not give it to you. You cannot avoid the fate you are destined to, by Allah. If you reject Islam, Allah will destroy you. I think that you are most probably the same person whom I have seen in the dream." Abu Huraira told me that Messenger of Allah ﷺ; said, "While I was sleeping, I saw (in a dream) two gold bracelets round my arm, and that worried me too much. Then I was instructed divinely in my dream, to blow them off and so I blew them off, and they flew away. I interpreted the two bracelets as symbols of two liars who would appear after me. And so one of them was Al-Ansi and the other was Musailama Al-Kadhdhab from Al-Yamama."
قَدِمَ مُسَيْلِمَةُ الْكَذَّابُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ فَجَعَلَ يَقُولُ إِنْ جَعَلَ لِي مُحَمَّدٌ الأَمْرَ مِنْ بَعْدِهِ تَبِعْتُهُ وَقَدِمَهَا فِي بَشَرٍ كَثِيرٍ مِنْ قَوْمِهِ فَأَقْبَلَ إِلَيْهِ رَسُولُ اللَّهِ ﷺ وَمَعَهُ ثَابِتُ بْنُ قَيْسِ بْنِ شَمَّاسٍ وَفِي يَدِ رَسُولِ اللَّهِ ﷺ قِطْعَةُ جَرِيدٍ حَتَّى وَقَفَ عَلَى مُسَيْلِمَةَ فِي أَصْحَابِهِ فَقَالَ لَوْ سَأَلْتَنِي هَذِهِ الْقِطْعَةَ مَا أَعْطَيْتُكَهَا وَلَنْ تَعْدُوَ أَمْرَ اللَّهِ فِيكَ وَلَئِنْ أَدْبَرْتَ لَيَعْقِرَنَّكَ اللَّهُ وَإِنِّي لأَرَاكَ الَّذِي أُرِيتُ فِيكَ مَا رَأَيْتُ فَأَخْبَرَنِي أَبُو هُرَيْرَةَ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ بَيْنَمَا أَنَا نَائِمٌ رَأَيْتُ فِي يَدَىَّ سِوَارَيْنِ مِنْ ذَهَبٍ فَأَهَمَّنِي شَأْنُهُمَا فَأُوحِيَ إِلَىَّ فِي الْمَنَامِ أَنِ انْفُخْهُمَا فَنَفَخْتُهُمَا فَطَارَا فَأَوَّلْتُهُمَا كَذَّابَيْنِ يَخْرُجَانِ بَعْدِي فَكَانَ أَحَدُهُمَا الْعَنْسِيَّ وَالآخَرُ مُسَيْلِمَةَ الْكَذَّابَ صَاحِبَ الْيَمَامَةِ