حَدَّثَنَا وَكِيعٌ حَدَّثَنَا سُفْيَانُ عَنِ ابْنِ طَاوُسٍ عَنْ أَبِيهِ عَنِ ابْنِ عَبَّاسٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مِنْ ابْتَاعَ طَعَامًا فَلَا يَبِعْهُ حَتَّى يَقْبِضَهُ قُلْتُ لِابْنِ عَبَّاسٍ لِمَ قَالَ أَلَا تَرَى أَنَّهُمْ يَبْتَاعُونَ بِالذَّهَبِ وَالطَّعَامُ مُرْجَأٌ
مسند امام احمد بن حنبل · Hadith 3346
It was narrated from Tawoos, from his father, that Ibn 'Abbas (RA) said: The Messenger of Allah (PBUH) said: "Whoever buys food should not sell it until he has taken possession of it." I said to Ibn 'Abbas: Why? He said: Don't you see that they are exchanging gold, but the delivery of food is delayed?
Sanad
حَدَّثَنَا وَكِيعٌ حَدَّثَنَا سُفْيَانُ عَنِ ابْنِ طَاوُسٍ عَنْ أَبِيهِ عَنِ ابْنِ عَبَّاسٍ