حَدَّثَنَا أَبِي رَضِيَ اللَّهُ عَنْهُ قَالَ حَدَّثَنَا سَعْدُ بْنُ عَبْدِ اللَّهِ قَالَ حَدَّثَنَا الْمُعَلَّى بْنُ مُحَمَّدٍ الْبَصْرِيُّ عَنْ مُحَمَّدِ بْنِ جُمْهُورٍ وَ غَيْرِهِ عَنْ عَبْدِ اللَّهِ بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ اللَّهِ عليه السلام قَالَ سَمِعْتُهُ يَقُولُ فِي الْقَائِمِ عليه السلام سُنَّةٌ مِنْ مُوسَى بْنِ عِمْرَانَ عليه السلام فَقُلْتُ وَ مَا سُنَّتُهُ مِنْ مُوسَى بْنِ عِمْرَانَ قَالَ خَفَاءُ مَوْلِدِهِ وَ غَيْبَتُهُ عَنْ قَوْمِهِ فَقُلْتُ وَ كَمْ غَابَ مُوسَى عَنْ أَهْلِهِ وَ قَوْمِهِ فَقَالَ ثماني [ثَمَانٍ] وَ عِشْرِينَ سَنَةً.
Narrated to us my father 
that: Narrated to us Saad bin Abdullah: Narrated to us Moalla bin Muhammad al-Basri from Muhammad bin Jumhur and others from Abdullah bin Sinan from Abi Abdullah 
that he said: “In the Qaim there is resemblance to Musa bin Imran. I asked: What is the resemblance to Musa bin Imran? He replied: Secret birth and occultation from his people. I asked: How long was Musa in occultation from his family and followers? He replied: For twenty-eight years.”
