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:3475ʿUthmān b. Abū Shaybah > Jarīr > al-Aʿmash Biʾisnādih And Maʿnāh > Walā Yuzakkīhim Walahum ʿAdhāb Alīm

"He used: 'Not purify them ; grievously will be their penalty.'" He said about (selling) the goods: I swear by Allah, I was given (the price) so and so for it. The other man considered it to be correct and bought it.  

أبو داود:٣٤٧٥حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا جَرِيرٌ عَنِ الأَعْمَشِ بِإِسْنَادِهِ وَمَعْنَاهُ قَالَ

وَلاَ يُزَكِّيهِمْ وَلَهُمْ عَذَابٌ أَلِيمٌ وَقَالَ فِي السِّلْعَةِ بِاللَّهِ لَقَدْ أُعْطِيَ بِهَا كَذَا وَكَذَا فَصَدَّقَهُ الآخَرُ فَأَخَذَهَا