Is it permissible to exchange dates for processed date products like Dibs (syrup), vinegar, Naatf (a sweet substance), or Qattarah (another sweet substance)?
Chapter on Riba (Usury) and Exchange (Sarf)
Al-Mughni
Book of Sales
Primary text
It is impermissible to exchange dates for any of these products because they contain something not of the date's genus, and some of these products are liquid while dates are solid.