Al-Kāfi
Hadith 38818ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ وَالْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُعَلَّى بْنِ مُحَمَّدٍ جَمِيعاً عَنِ الْوَشَّاءِ قَالَ سَمِعْتُ الرِّضَا (عَلَيهِ السَّلام) يَقُولُ كَانَ الرَّجُلُ مِنْ بَنِي إِسْرَائِيلَ إِذَا أَرَادَ الْعِبَادَةَ صَمَتَ قَبْلَ ذَلِكَ عَشْرَ سِنِينَ.
18. A number of our people have narrated from Sahl ibn Ziyad and al-Husayn ibn Muhammad from Mu’alla ibn Muhammad all from al-Washsha’ who has said the following: “I heard al-Rida (a.s.) say, ‘In the tribe of Israel if a man wanted to become a worshipper he was to keep silent for ten years before starting the deed.’”