Mishkat al-Masabih 30 Fine Qualities كتاب المناقب 106

عَنْ عِمْرَانَ بْنِ حُصَيْنٍ أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «إِنَّ عَلِيًّا مِنِّي وَأَنَا مِنْهُ وَهُوَ وَلِيُّ كُلِّ مُؤْمِنٍ» . رَوَاهُ التِّرْمِذِيّ

`Imran b. Husain reported God’s messenger as saying, “`Ali pertains to me and I pertain to him, and he is the guardian of every believer.” Tirmidhi transmitted it.