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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:20888 – Abū ʿAbdullāh al-Ḥāfiẓ And ʾAbū ʿUthmān Saʿīd b. Muḥammad b. Muḥammad b. ʿAbdān > Abū al-ʿAbbās Muḥammad b. Yaʿqūb

[Machine] "He is killed and not given a chance to repent."  

البيهقي:٢٠٨٨٨ – وَأَخْبَرَنَا أَبُو عَبْدِ اللهِ الْحَافِظُ وَأَبُو عُثْمَانَ سَعِيدُ بْنُ مُحَمَّدِ بْنِ مُحَمَّدِ بْنِ عَبْدَانَ قَالَا ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا حَسْنُونٌ الْبِنَاءُ الْكُوفِيُّ ثنا عُمَرُ بْنُ إِبْرَاهِيمَ بْنِ خَالِدٍ ثنا قَيْسُ بْنُ الرَّبِيعِ قَالَ سَأَلْتُ جَعْفَرَ بْنَ مُحَمَّدٍ عَنِ الْقُرْآنِ فَقَالَ كَلَامُ اللهِ قُلْتُ فَمَخْلُوقٌ؟ قَالَ لَا قُلْتُ فَمَا تَقُولُ فِيمَنْ زَعَمَ أَنَّهُ مَخْلُوقٌ؟ قَالَ

يُقْتَلُ وَلَا يُسْتَتَابُ  

See similar narrations below:

Collected by Bayhaqī, Suyūṭī
bayhaqi:16855 – Ibn Wahb > Layth > Rabīʿah

[Machine] He said about the heretic: he should be killed and not given a chance to repent.  

البيهقي:١٦٨٥٥ – قَالَ وَحَدَّثَنَا ابْنُ وَهْبٍ عَنْ لَيْثٍ عَنْ رَبِيعَةَ

أَنَّهُ قَالَ فِي الزِّنْدِيقِ يُقْتَلُ وَلَا يُسْتَتَابُ