The Birth of the Possessor (of Divine Authority) عليه السلام
Al-Kāfi|Volume 1|Book 4|Chapter 125
وُلِدَ (عَلَيْهِ السَّلام) لِلنِّصْفِ مِنْ شَعْبَانَ سَنَةَ خَمْسٍ وَخَمْسِينَ وَمِائَتَيْنِ.
He was born on fifteenth of the month of Sha‘ban in the year two hundred fifty five AH.
- Ṣaḥīḥ al-Kāfī