Al-Kāfi - Volume 1 > The Birth of abu al-Hassan Ali ibn Muhammad (a.s.)
Hadith #0

وُلِدَ (عَلَيْهِ السَّلام) لِلنِّصْفِ مِنْ ذِي الْحِجَّةِ سَنَةَ اثْنَتَيْ عَشْرَةَ وَمِائَتَيْنِ. وَرُوِيَ أَنَّهُ وُلِدَ (عَلَيْهِ السَّلام) فِي رَجَبٍ سَنَةَ أَرْبَعَ عَشْرَةَ وَمِائَتَيْنِ وَمَضَى لارْبَعٍ بَقِينَ مِنْ جُمَادَى الاخِرَةِ سَنَةَ أَرْبَعٍ وَخَمْسِينَ وَمِائَتَيْنِ. وَرُوِيَ أَنَّهُ قُبِضَ (عَلَيْهِ السَّلام) فِي رَجَبٍ سَنَةَ أَرْبَعٍ وَخَمْسِينَ وَمِائَتَيْنِ وَلَهُ أَحَدٌ وَأَرْبَعُونَ سَنَةً وَسِتَّةُ أَشْهُرٍ. وَأَرْبَعُونَ سَنَةً عَلَى الْمَوْلِدِ الاخَرِ الَّذِي رُوِيَ وَكَانَ الْمُتَوَكِّلُ أَشْخَصَهُ مَعَ يَحْيَى بْنِ هَرْثَمَةَ بْنِ أَعْيَنَ مِنَ الْمَدِينَةِ إِلَى سُرَّ مَنْ رَأَى فَتُوُفِّيَ بِهَا (عَلَيْهِ السَّلام) وَدُفِنَ فِي دَارِهِ وَأُمُّهُ أُمُّ وَلَدٍ يُقَالُ لَهَا سَمَانَةُ.

He was born on Dhil Hajj fifteen in the year two hundred twelve. It is said that he was born in the month of Rajab in the year two hundred and fourteen AH. He passed away on twenty sixth of Jamadi al-Akhir in the year two hundred fifty two. It is narrated that he passed away in the month of Rajab in the year two hundred fifty four AH. He lived for forty one years and six months. According to the previously mentioned date he lived for forty years. Ali-Mutawakkil had summond him from al-Madina with Yahya ibn Harthama ibn ’Ayan to Surra man Ra‘Abdallah. He left this world therefrom and he was buried in his house. His mother was ’Umm Walad, called Samana.