 وُلِدَ أَبُو الْحَسَنِ الرِّضَا (عَلَيْهِ السَّلام) سَنَةَ ثَمَانٍ وَأَرْبَعِينَ وَمِائَةٍ وَقُبِضَ (عَلَيْهِ السَّلام) فِي صَفَرٍ مِنْ سَنَةِ ثَلاثٍ وَمِائَتَيْنِ وَهُوَ ابْنُ خَمْسٍ وَخَمْسِينَ سَنَةً وَقَدِ اخْتُلِفَ فِي تَارِيخِهِ إِلا أَنَّ هَذَا التَّارِيخَ هُوَ أَقْصَدُ إِنْ شَاءَ الله وَتُوُفِّيَ (عَلَيْهِ السَّلام) بِطُوسَ فِي قَرْيَةٍ يُقَالُ لَهَا سَنَابَادُ مِنْ نُوقَانَ عَلَى دَعْوَةٍ وَدُفِنَ بِهَا وَكَانَ الْمَأْمُونُ أَشْخَصَهُ مِنَ الْمَدِينَةِ إِلَى مَرْوَ عَلَى طَرِيقِ الْبَصْرَةِ وَفَارِسَ فَلَمَّا خَرَجَ الْمَأْمُونُ وَشَخَصَ إِلَى بَغْدَادَ أَشْخَصَهُ مَعَهُ فَتُوُفِّيَ فِي هَذِهِ الْقَرْيَةِ وَأُمُّهُ أُمُّ وَلَدٍ يُقَالُ لَهَا أُمُّ الْبَنِينَ.
 Abu al-Hassan al-Rida  was born in the year the one hundred forty eight AH. He passed away in the month of Safar in the year two hundred and three at the age of fifty-five. All the views about this date are not the same but it is more accurate, if Allah would so will. He died in Tus in the town called Sanabad, that is within the reach of human voice from Nawqan. He was buried there. Al-Ma’mun had summoned him from Madina to Marw via Basra to Persia. When al-Ma’mun left for Baghdad he took The Imam  he passed away in this town. His mother was ’Umm Walad called ’Umm al-Banin.