Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
bayhaqi:16727Abū ʿAbdullāh al-Ḥāfiẓ > Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Aḥmad b. ʿAbd al-Jabbār > Yūnus b. Bukayr > Muḥammad b. Isḥāq b. Yasār

[Machine] The first apostate was Musaylimah Al Yamamah from the tribe of Banu Hanifah, and Al-Aswad ibn Ka'b Al-Ansari in Yemen during the lifetime of Prophet Muhammad, ﷺ . Tuleha ibn Khuwaylid Al-Asadi also claimed prophethood and deceived the tribe of Banu Asad.  

البيهقي:١٦٧٢٧أَخْبَرَنَا أَبُو عَبْدِِ اللهِ الْحَافِظُ ثَنَا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثَنَا أَحْمَدُ بْنُ عَبْدِ الْجَبَّارِ ثَنَا يُونُسُ بْنُ بُكَيْرٍ عَنْ مُحَمَّدِ بْنِ إِسْحَاقَ بْنِ يَسَارٍ قَالَ

أَوَّلُ رَدَّةٍ كَانَتْ فِي الْعَرَبِ مُسَيْلِمَةُ بِالْيَمَامَةِ فِي بَنِي حَنِيفَةَ وَالْأَسْوَدُ بْنُ كَعْبٍ الْعَنْسِيُّ بِالْيَمَنِ فِي حَيَاةِ رَسُولِ اللهِ ﷺ وَخَرَجَ طُلَيْحَةُ بْنُ خُوَيْلِدٍ الْأَسَدِيُّ فِي بَنِي أَسَدٍ يَدَّعِي النُّبُوَّةَ يَسْجَعُ لَهُمْ