If I borrow salt from my neighbor and return more than I took, is that considered riba (usury or interest)?

Question:
Honorable Shaykh, may Allah grant you success. A questioner says: Sometimes a woman needs salt or wheat from her neighbor, which are among the items subject to riba. Is it permissible for her to borrow this from her and then return more than she borrowed? Does this fall under riba?

Answer:
No. The best of you are those who are best in repaying debts. If it was stipulated, meaning if the one who lent it to her made the increase a condition, then it is riba. If she did not stipulate it, but she simply increased the amount, then this is a matter of good repayment. The Prophet (peace and blessings be upon him) said: The best of you are those who are best in repaying debts.