ʿUyūn akhbār al-Riḍā
Hadith 219219 - وَبِإِسْنادِهِ قالَ: قالَ رَسُولَ اللَّهِ صَلَّى اللهُ عَلَيْهِوَآلِهِ: خَلَقتُ أَنَا وَعَلِيِّ مِن نُورٍ واحِدً.
31-219 According to the same documentation, God’s Prophet (S) said, “God created Ali and I from the same light.”