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:12163 – Abū Ṭāhir al-Faqīh > Abū ʿUthmān al-Baṣrī > Muḥammad b. ʿAbd al-Wahhāb > al-Ḥusayn b. al-Walīd > Sharīk

[Machine] I heard a partner saying, "Ali embraced Islam when he was eleven years old."  

البيهقي:١٢١٦٣ – أَخْبَرَنَا أَبُو طَاهِرٍ الْفَقِيهُ أنبأ أَبُو عُثْمَانَ الْبَصْرِيُّ ثنا مُحَمَّدُ بْنُ عَبْدِ الْوَهَّابِ قَالَ سَمِعْتُ الْحُسَيْنَ بْنَ الْوَلِيدِ يَقُولُ

سَمِعْتُ شَرِيكًا يَقُولُ أَسْلَمَ عَلِيٌّ وَهُوَ ابْنُ إِحْدَى عَشْرَةَ سَنَةً