٧- مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ صَفْوَانَ عَنْ أَبِي سَعِيدٍ عَنْ عَبْدِ الْمَلِكِ بْنِ عَمْرٍو قَالَ قُلْتُ لأبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) أَشْتَرِي مِائَةَ رَاوِيَةٍ مِنْ زَيْتٍ فَأَعْرِضُ رَاوِيَةً وَاثْنَتَيْنِ فَأَزِنُهُمَا ثُمَّ آخُذُ سَائِرَهُ عَلَى قَدْرِ ذَلِكَ قَالَ لا بَأْسَ.
7. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from Safwan from abu Sa‘id from ‘Abd al-Malik ibn ‘Amr who has said the following: “This is concerning my question before abu ‘Abd Allah , about buying a hundred Rawiyah (a certain unit of measurement) of oil, then weigh one or two Rawiyah then accept the rest according to such weighing. He (the Imam) said, ‘It is not harmful.’” 