[Machine] I used to sell camels at Al-Baqi' and I would accept paper money in exchange. Then I would take the paper money and give it in exchange for coins. I came to the Prophet ﷺ while he was in the house of Hafsah, and I said, "O Messenger of Allah, I seek your guidance. I used to sell camels at Al-Baqi' and I would accept this (paper money) in exchange for this (coins), and this (coins) in exchange for this (paper money). He said, "There is no problem if you take them at their current value as long as they haven't parted ways between you."
كُنْتُ أَبِيعُ الْإِبِلَ بِالْبَقِيعِ فَأَقْبِضُ الْوَرِقَ مِنَ الدَّنَانِيرِ وَالدَّنَانِيرَ مِنَ الْوَرِقِ فَأَتَيْتُ النَّبِيَّ ﷺ وَهُوَ فِي بَيْتِ حَفْصَةَ فَقُلْتُ يَا رَسُولَ اللهِ رُوَيْدَكَ أَسْأَلُكَ إِنِّي كُنْتُ أَبِيعُ الْإِبِلَ بِالْبَقِيعِ فَأَقْبِضُ هَذِهِ مِنْ هَذِهِ وَهَذِهِ مِنْ هَذِهِ فَقَالَ لَا بَأْسَ أَنْ تَأْخُذَهَا بِسِعْرِ يَوْمِهَا مَا لَمْ تَفْتَرِقَا وَبَيْنَكُمَا شَيْءٌ