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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
muslim:1525d – Abū Bakr b. Abū Shaybah And ʾAbū Kurayb Waʾisḥāq b. Ibrāhīm > Isḥāq > al-Ākharān > Wakīʿ > Sufyān > Ibn Ṭāwus from his father > Ibn ʿAbbās

He who buys foodgrain should not sell it, until he has weighed it (and then taken possession of it). I (Tawus) said to Ibn Abbas (Allah be pleased with them): Why is it so? Thereupon he said: Don't you see that they (the people) sell foodgrains against gold for the stipulated time. Abu Kuraib did not make any mention of the stipulated time.  

مسلم:١٥٢٥d – حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ وَأَبُو كُرَيْبٍ وَإِسْحَاقُ بْنُ إِبْرَاهِيمَ قَالَ إِسْحَاقُ أَخْبَرَنَا وَقَالَ الآخَرَانِ حَدَّثَنَا وَكِيعٌ عَنْ سُفْيَانَ عَنِ ابْنِ طَاوُسٍ عَنْ أَبِيهِ عَنِ ابْنِ عَبَّاسٍ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ مَنِ ابْتَاعَ طَعَامًا فَلاَ يَبِعْهُ حَتَّى يَكْتَالَهُ فَقُلْتُ لاِبْنِ عَبَّاسٍ لِمَ فَقَالَ أَلاَ تَرَاهُمْ يَتَبَايَعُونَ بِالذَّهَبِ وَالطَّعَامُ مُرْجَأٌ وَلَمْ يَقُلْ أَبُو كُرَيْبٍ مُرْجَأٌ  

See similar narrations below:

Collected by Abū Dāwūd, Aḥmad
abudawud:3496 – Abū Bakr And ʿUthmān Āb.ā Abū Shaybah > Wakīʿ > Sufyān > Ibn Ṭāwus from his father > Ibn ʿAbbās

The Messenger of Allah ﷺ as saying: If anyone buys grain, he should not sell it until he measures it. Abu Bakr added in his version: I asked Ibn 'Abbas: Why ? He replied: Do you not see that they sell (grain) for gold, but the grain is still with the seller.  

أبو داود:٣٤٩٦ – حَدَّثَنَا أَبُو بَكْرٍ وَعُثْمَانُ ابْنَا أَبِي شَيْبَةَ قَالاَ حَدَّثَنَا وَكِيعٌ عَنْ سُفْيَانَ عَنِ ابْنِ طَاوُسٍ عَنْ أَبِيهِ عَنِ ابْنِ عَبَّاسٍ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ مَنِ ابْتَاعَ طَعَامًا فَلاَ يَبِعْهُ حَتَّى يَكْتَالَهُ زَادَ أَبُو بَكْرٍ قَالَ قُلْتُ لاِبْنِ عَبَّاسٍ لِمَ قَالَ أَلاَ تَرَى أَنَّهُمْ يَتَبَايَعُونَ بِالذَّهَبِ وَالطَّعَامُ مُرَجًّى  

ahmad:3346 – Wakīʿ > Sufyān > Ibn Ṭāwus from his father > Ibn ʿAbbās

The Prophet ﷺ said, "He who buys foodstuff should not sell it till he has received it." (Using translation from Bukhārī 2133)  

أحمد:٣٣٤٦ – حَدَّثَنَا وَكِيعٌ حَدَّثَنَا سُفْيَانُ عَنِ ابْنِ طَاوُسٍ عَنْ أَبِيهِ عَنِ ابْنِ عَبَّاسٍ قَالَ

قَالَ رَسُولُ اللهِ ﷺ مَنِ ابْتَاعَ طَعَامًا فَلَا يَبِعْهُ حَتَّى يَقْبِضَهُ قُلْتُ لِابْنِ عَبَّاسٍ لِمَ؟ قَالَ أَلَا تَرَى أَنَّهُمْ يَتَبَايَعُونَ بِالذَّهَبِ وَالطَّعَامُ مُرْجَأٌ