Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
abudawud:3496Abū 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:٣٤٩٦حَدَّثَنَا 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  


See similar narrations below:

Collected by Muslim, Aḥmad
muslim:1525dAbū 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:١٥٢٥dحَدَّثَنَا 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  

ahmad:3346Wakīʿ > 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:٣٣٤٦حَدَّثَنَا 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