The ruling on stipulating an increase in a loan of wheat

Question:
And shirk is not [the case] if he gives another man a portion of the wheat from the field.

Answer:
If he gives. If a man gives another man one hundred ardeb of wheat before the harvest, on the condition that at the time of the harvest it amounts to one hundred and twenty ardeb, is this permissible? Is it riba (usury or interest) if he lends him one hundred ardeb of wheat until the harvest, on the condition that he returns to him one hundred and ten ardeb? This is riba. Regarding the loan, we said that a stipulated increase is not permissible; a stipulated increase is not permissible, because this is riba. Yes.