كتاب المساقاة
22  
The Book of Musaqah
(15)
Chapter: Exchange and Selling Gold for Silver on the spot
(15)
باب الصَّرْفِ وَبَيْعِ الذَّهَبِ بِالْوَرِقِ نَقْدًا ‏‏
Sahih Muslim 1588 b

This hadith has been narrated on the authority of Fudail b. Ghazwan with the same chain of transmitters, but he made no mention of (payment being) made on the spot.

وَحَدَّثَنِيهِ أَبُو سَعِيدٍ الأَشَجُّ، حَدَّثَنَا الْمُحَارِبِيُّ، عَنْ فُضَيْلِ بْنِ غَزْوَانَ، بِهَذَا الإِسْنَادِ ‏.‏ وَلَمْ يَذْكُرْ ‏ "‏ يَدًا بِيَدٍ ‏"‏ ‏.‏
Reference : Sahih Muslim 1588b
In-book reference : Book 22, Hadith 106
USC-MSA web (English) reference : Book 10, Hadith 3856
  (deprecated numbering scheme)