3936 - وَ رَوَى صَفْوَانُ بْنُ يَحْيَى عَنْ عَبْدِ اَللَّهِ بْنِ سِنَانٍ قَالَ : سَأَلْتُ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ فِي اَلرَّجُلِ يُسْلِمُ فِي غَيْرِ زَرْعٍ وَ لاَ نَخْلٍ قَالَ "يُسَمِّي كَيْلاً مَعْلُوماً إِلَى أَجَلٍ مَعْلُومٍ" قَالَ وَ سَأَلْتُهُ عَنِ اَلسَّلَمِ فِي اَلْحَيَوَانِ وَ اَلطَّعَامِ وَ يَرْتَهِنَ اَلرَّجُلُ بِمَالِهِ رَهْناً قَالَ "نَعَمْ اِسْتَوْثِقْ مِنْ مَالِكَ".
Hadith.3936 - Safwan bin Yahya narrated from Abdullah bin Sinan, who said:
I asked Abu Abdillah 
about a man who makes a forward contract (salam) for something other than crops or dates.
Imam said: "He should specify a known measure and set a fixed time for delivery."
I also asked Imam about making a forward contract for livestock or food and whether the creditor can take collateral for his money.
Imam said: "Yes, secure your wealth properly."
