٤- مُحَمَّدُ بْنُ يَحْيَى عَنْ مُحَمَّدِ بْنِ الْحُسَيْنِ عَنْ عَلِيِّ بْنِ الْحَكَمِ عَنْ مُوسَى بْنِ بَكْرٍ عَنْ أَبِي الْحَسَنِ (عَلَيْهِ السَّلام) قَالَ سَأَلْتُهُ عَنْ رَجُلٍ اسْتَأْجَرَ سَفِينَةً مِنْ مَلاحٍ فَحَمَّلَهَا طَعَاماً وَاشْتَرَطَ عَلَيْهِ إِنْ نَقَصَ الطَّعَامُ فَعَلَيْهِ قَالَ جَائِزٌ قُلْتُ لَهُ إِنَّهُ رُبَّمَا زَادَ الطَّعَامُ قَالَ فَقَالَ يَدَّعِي الْمَلاحُ أَنَّهُ زَادَ فِيهِ شَيْئاً قُلْتُ لا قَالَ هُوَ لِصَاحِبِ الطَّعَامِ الزِّيَادَةُ وَعَلَيْهِ النُّقْصَانُ إِذَا كَانَ قَدِ اشْتَرَطَ عَلَيْهِ ذَلِكَ.
4. Muhammad ibn Yahya has narrated from Muhammad ibn al-Husayn from Ali ibn al-Hakam from Musa ibn Bakr who has said the following: “I once asked abu al-Hassan , about the case of a man who hired a ship from a sailor and loaded it with foodstuff, with the condition that if it was reduced he was liable. He (the Imam) said, ‘It is permissible.’ I then said, ‘Perhaps it increases.’ He (the Imam) asked, ‘Does the sailor claim that he has increased anything to it?’ I replied, ‘No, he does not claim.’ He (the Imam) said, ‘It belongs to the owner of the foodstuff and he is liable for reduction if it is stipulated.’” 