Hadithcore
Sunan Abi Dawud, 1731
sahih· Al-Albani

Narrated Abdullah ibn Abbas:

Ibn Abbas recited this verse: 'It is no sin for you that you seek the bounty of your Lord', and said: The people would not trade in Mina (during the hajj), so they were commanded to trade when they proceeded from Arafat.

حَدَّثَنَا يُوسُفُ بْنُ مُوسَى، حَدَّثَنَا جَرِيرٌ، عَنْ يَزِيدَ بْنِ أَبِي زِيَادٍ، عَنْ مُجَاهِدٍ، عَنْ عَبْدِ اللَّهِ بْنِ عَبَّاسٍ، قَالَ قَرَأَ هَذِهِ الآيَةَ ‏{‏ لَيْسَ عَلَيْكُمْ جُنَاحٌ أَنْ تَبْتَغُوا فَضْلاً مِنْ رَبِّكُمْ ‏}‏ قَالَ كَانُوا لاَ يَتَّجِرُونَ بِمِنًى فَأُمِرُوا بِالتِّجَارَةِ إِذَا أَفَاضُوا مِنْ عَرَفَاتٍ ‏.‏

References2 variants
In-Book Reference
Book 11, Hadith 11
English Reference
Book 10, Hadith 1727