١٣ـ عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنْ عَلِيِّ بْنِ حَسَّانَ عَنْ مُوسَى بْنِ بَكْرٍ قَالَ سَمِعْتُ أَبَا الْحَسَنِ مُوسَى (عَلَيْهِ السَّلاَم) يَقُولُ الرِّفْقُ نِصْفُ الْعَيْشِ وَمَا عَالَ امْرُؤٌ فِي اقْتِصَادِهِ. 
13. A number of our people have narrated from Sahl ibn Ziyad from Ali ibn Hassan from Musa ibn Bakr who has said the following: “I heard abu al-Hassan, Musa , say, ‘Easing off in spending is half of one’s sustenance, and with observance of moderation, one does not become poor.’” 