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:2742Abū al-Ḥusayn b. al-Faḍl al-Qaṭṭān> Abū al-Ḥasan Aḥmad b. ʿUthmān b. Jaʿfar al-Muqriʾ > Muḥammad b. ʿAlī al-Wazzān > Muʿāwiyah b. ʿAmr > Isrāʾīl > Abū Isḥāq > al-Ḥārith > ʿAlī

[Machine] The Messenger of Allah ﷺ said to Ali and mentioned a hadith in which he said, "Do not fall between the prostrations. The narration of Harith al-A'war cannot be used as evidence, and likewise the narration of Layth ibn Abi Sulaym and the narrations of Ibn Abbas and Ibn Umar are authentic."  

البيهقي:٢٧٤٢أَخْبَرَنَا أَبُو الْحُسَيْنِ بْنُ الْفَضْلِ الْقَطَّانُ بِبَغْدَادَ أنبأ أَبُو الْحَسَنِ أَحْمَدُ بْنُ عُثْمَانَ بْنِ جَعْفَرٍ الْمُقْرِئُ ثنا مُحَمَّدُ بْنُ عَلِيٍّ الْوَزَّانُ ثنا مُعَاوِيَةُ بْنُ عَمْرٍو ثنا إِسْرَائِيلُ عَنْ أَبِي إِسْحَاقَ عَنِ الْحَارِثِ عَنْ عَلِيٍّ قَالَ

قَالَ رَسُولُ اللهِ ﷺ يَا عَلِيُّ وَذَكَرَ الْحَدِيثَ قَالَ فِيهِ وَلَا تُقْعِ بَيْنَ السَّجْدَتَيْنِ الْحَارِثُ الْأَعْوَرُ لَا يُحْتَجُّ بِهِ وَكَذَلِكَ لَيْثُ بْنُ أَبِي سُلَيْمٍ وَحَدِيثُ ابْنِ عَبَّاسٍ وَابْنِ عُمَرَ صَحِيحٌ