١٢- مُحَمَّدُ بْنُ يَحْيَى عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ عَلِيِّ بْنِ الْحَكَمِ عَنْ عَبْدِ الْمَلِكِ بْنِ عُتْبَةَ قَالَ سَأَلْتُهُ عَنِ الرَّجُلِ أُرِيدُ أَنْ أُعَيِّنَهُ الْمَالَ وَيَكُونُ لِي عَلَيْهِ مَالٌ قَبْلَ ذَلِكَ فَيَطْلُبُ مِنِّي مَالا أَزِيدُهُ عَلَى مَالِيَ الَّذِي لِي عَلَيْهِ أَيَسْتَقِيمُ أَنْ أَزِيدَهُ مَالا وَأَبِيعَهُ لُؤْلُؤَةً تُسَاوِي مِائَةَ دِرْهَمٍ بِأَلْفِ دِرْهَمٍ فَأَقُولَ أَبِيعُكَ هَذِهِ اللُّؤْلُؤَةَ بِأَلْفِ دِرْهَمٍ عَلَى أَنْ أُؤَخِّرَكَ بِثَمَنِهَا وَبِمَالِي عَلَيْكَ كَذَا وَكَذَا شَهْراً قَالَ لا بَأْسَ. 
12. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from Ali ibn al-Hakam from ‘Abd al-Malik ibn ‘Utbah who has said the following: “I once asked him (the Imam) , about the case of a man with whom I like to arrange an al-’Aynah. He already owes me a certain amount of goods. He asks me for additional goods. Is it right to provide him additional goods and sell to him a pearl worth a hundred dirham for a thousand dirham and I say, ‘I sell to you this pearl for a thousand dirham so I can extend the payback time for this and what you already owe to me up to so and so many months.’ He (the Imam) said, ‘It is not unlawful.’” 