Sunan an-Nasa'i, Book 44, Hadith 137 (In-Book) ⓘ
It was narrated from Saeed bin Jubair, from Ibn 'Umar, that: he did not see anything wrong with parying Dirhams for Dinars.
أَخْبَرَنَا مُحَمَّدُ بْنُ بَشَّارٍ، قَالَ أَنْبَأَنَا مُؤَمَّلٌ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي هَاشِمٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عُمَرَ، أَنَّهُ كَانَ لاَ يَرَى بَأْسًا - يَعْنِي - فِي قَبْضِ الدَّرَاهِمِ مِنَ الدَّنَانِيرِ وَالدَّنَانِيرِ مِنَ الدَّرَاهِمِ .
also referenced under: Hadith 4585 (Reference) & Volume 5, Book 44, Hadith 4589 (DarusSalam)