Hadith on Trade: Honest business is blessed, lying is not

Hakim ibn Hizam reported: The Prophet, peace and blessings be upon him, said, “Both parties in a business transaction have the right to annul it, as long as they have not separated. If they are truthful and clear with one another, there is blessing in their transaction. If they lie and conceal something, the blessing of their transaction will be eliminated.

Source: Ṣaḥīḥ al-Bukhārī 1973, Ṣaḥīḥ Muslim 1532

Grade: Muttafaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Muslim

عَنْ حَكِيمِ بْنِ حِزَامٍ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ الْبَيِّعَانِ بِالْخِيَارِ مَا لَمْ يَتَفَرَّقَا فَإِنْ صَدَقَا وَبَيَّنَا بُورِكَ لَهُمَا فِي بَيْعِهِمَا وَإِنْ كَذَبَا وَكَتَمَا مُحِقَ بَرَكَةُ بَيْعِهِمَا

1973 صحيح البخاري كتاب البيوع باب إذا بين البيعان ولم يكتما ونصحا

1532 صحيح مسلم كتاب البيوع باب الصدق في البيع والبيان