We made a journey to Syria on an expedition along with the Messenger of Allah ﷺ. The Nabateans of Syria came to us and we paid in advance to them (in a salam contract) in wheat and olive oil at a specified rate and for a specified time. He asked (by the people): you might have contracted with him who had these things in his possession? He replied: We did not ask them. (Using translation from Abū Dāʾūd 3466)  

غَزَوْنَا مَعَ رَسُولِ اللَّهِ ﷺ الشَّامَ فَكَانَ يَأْتِينَا أَنْبَاطٌ مِنْ أَنْبَاطِ الشَّامِ فَنُسْلِفُهُمْ فِي الْبُرِّ وَالزَّيْتِ سِعْرًا مَعْلُومًا وَأَجَلًا مَعْلُومًا فَقِيلَ لَهُ وَمِمَّنْ لَهُمْ ذَلِكَ؟ قَالَ مَا كُنَّا نَسْأَلُهُمْ  

"غَزَوْنَا مَعَ رَسُول اللهِ ﷺ غَزْوةَ الشَّام، فَكَانَ يَأتيهِ (*) أَنْبَاطٌ منْ أَنبَاطِ الشامِ، فَنُسْلمُ إِلَيْهِمْ (* *) فِى البُرِّ وَالزَّيْتِ، فَقَالَ رَجُلٌ: أَفيمَن لهُ بُرٌّ وَزَيْتٌ، أَمْ فِيمَنْ لَيْسَ لَهُ، قَالَ مَا كُنَّا نَسْأَلُهُمَ عَنْ ذَلِكَ".