Messenger of Allah ﷺ said, "Don't sell gold for gold unless equal in weight, nor silver for silver unless equal in weight, but you could sell gold for silver or silver for gold as you like."
قَالَ رَسُولُ اللَّهِ ﷺ لاَ تَبِيعُوا الذَّهَبَ بِالذَّهَبِ إِلاَّ سَوَاءً بِسَوَاءٍ وَالْفِضَّةَ بِالْفِضَّةِ إِلاَّ سَوَاءً بِسَوَاءٍ وَبِيعُوا الذَّهَبَ بِالْفِضَّةِ وَالْفِضَّةَ بِالذَّهَبِ كَيْفَ شِئْتُمْ
that his father said, "The Prophet ﷺ forbade the selling of gold for gold and silver for silver except if they are equivalent in weight, and allowed us to sell gold for silver and vice versa as we wished."
نَهَى النَّبِيُّ ﷺ عَنِ الْفِضَّةِ بِالْفِضَّةِ وَالذَّهَبِ بِالذَّهَبِ إِلاَّ سَوَاءً بِسَوَاءٍ وَأَمَرَنَا أَنْ نَبْتَاعَ الذَّهَبَ بِالْفِضَّةِ كَيْفَ شِئْنَا وَالْفِضَّةَ بِالذَّهَبِ كَيْفَ شِئْنَا
"The Messenger of Allah forbade selling silver for silver and gold for gold, unless it was of equal amounts. And he told us to sell gold for silver however we wanted, and silver for gold however we wanted.
نَهَى رَسُولُ اللَّهِ ﷺ عَنْ بَيْعِ الْفِضَّةِ بِالْفِضَّةِ وَالذَّهَبِ بِالذَّهَبِ إِلاَّ سَوَاءً بِسَوَاءٍ وَأَمَرَنَا أَنْ نَبْتَاعَ الذَّهَبَ بِالْفِضَّةِ كَيْفَ شِئْنَا وَالْفِضَّةَ بِالذَّهَبِ كَيْفَ شِئْنَا
"The Messenger of Allah forbade us from selling silver for silver unless it was of equal amounts, or selling gold for gold unless it was of equal amounts. The messenger of Allah said: 'Sell gold for silver however you want, and silver for gold however you want."'
نَهَانَا رَسُولُ اللَّهِ ﷺ أَنْ نَبِيعَ الْفِضَّةَ بِالْفِضَّةِ إِلاَّ عَيْنًا بِعَيْنٍ سَوَاءً بِسَوَاءٍ وَلاَ نَبِيعَ الذَّهَبَ بِالذَّهَبِ إِلاَّ عَيْنًا بِعَيْنٍ سَوَاءً بِسَوَاءٍ قَالَ رَسُولُ اللَّهِ ﷺ تَبَايَعُوا الذَّهَبَ بِالْفِضَّةِ كَيْفَ شِئْتُمْ وَالْفِضَّةَ بِالذَّهَبِ كَيْفَ شِئْتُمْ
"The Messenger of Allah forbade selling silver for silver and gold for gold, unless it was of equal amounts. And he told us to sell gold for silver however we wanted, and silver for gold however we wanted. (Using translation from Nasāʾī 4578)
أَبُو بَكْرَةَ «نَهَى رَسُولُ اللَّهِ ﷺ أَنْ يَبْتَاعَ الْفِضَّةَ بِالْفِضَّةِ وَالذَّهَبَ بِالذَّهَبِ إِلَّا سَوَاءً بِسَوَاءٍ وَأَمَرَ أَنْ يَبْتَاعَ الْفِضَّةَ بِالذَّهَبِ كَيْفَ شَاءَ وَالذَّهَبَ بِالْفِضَّةِ كَيْفَ شَاءَ»
that his father said, "The Prophet ﷺ forbade the selling of gold for gold and silver for silver except if they are equivalent in weight, and allowed us to sell gold for silver and vice versa as we wished." (Using translation from Bukhārī 2182)
نَهَانَا رَسُولُ اللهِ ﷺ عَنْ بَيْعِ الْفِضَّةِ بِالْفِضَّةِ وَالذَّهَبِ بِالذَّهَبِ إِلَّا سَوَاءً بِسَوَاءٍ وَأَمَرَنَا أَنْ نَبْتَاعَ الذَّهَبَ فِي الْفِضَّةِ كَيْفَ شِئْنَا وَالْفِضَّةَ بِالذَّهَبِ كَيْفَ شِئْنَا
"لا تَبيعُوا الذَّهَبَ بِالذَّهَبِ إِلا سَوَاءً بِسَوَاءِ، وَالْفِضَّةَ بِالْفِضَّةِ إِلا سَوَاءً بِسَوَاءٍ، وَبِيعُوا الذهَبَ بِالْفِضَّةِ وَالْفِضَّةَ بالذَّهَبِ كَيفَ شِئْتُمْ".