What is the explanation to Prophet's action reported in Sahih al-Bukhari 443?

Bismillah. Alhamdulillahi rabbil-'alamin was-Salatu was-Salam 'ala Sayyidil-Mursalin wa 'ala 'Alihi wa Sahbihi Ajma'in. ---------- Sahih al-Bukhari 443: > **Narrated Jabir bin `Abdullah:** > > I went to the Prophet (ﷺ) in the mosque (the sub-narrator Mas'ar > thought that Jabir had said, "In the forenoon.") He ordered me to pray > two rak`at. **He owed me some money and he repaid it to me and gave > more than what was due to me**. I can't understand this hadith because repaying debt with surplus is Riba in Islam. Nauthu billah, I am not accusing the Prophet (ﷺ) of sin but could someone explain what is happening? ---------- **Edit:** What is troubling me are following hadiths Sunan an-Nasa'i 4559: > **Abu Hurairah said:** > > The Messenger of Allah said: "Dates for dates, wheat for wheat, barley > for barley, salt for salt, exchanged hand to hand. **Whoever gives > more** or takes more has engaged in Riba unless they are of different > types." Sahih Muslim 1584e: > **Abu Sa'id al-Khudri (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:** > > Gold is to be paid for by gold, silver by silver, wheat by wheat, > barley by barley, dates by dates, salt by salt, like by like, payment > being made hand to hand. **He who made an addition to it**, or asked for > an addition, in fact dealt in usury. The receiver and the giver are > equally guilty. Sahih Muslim 1588a: > **Abu Huraira (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:** > > Dates are to be paid for by dates, wheat by wheat, barley by barley, > salt by salt, like for like, payment being made on the spot. **He who > made an addition** or demanded an addition, in fact, dealt in usury > except in case where their classes differ. Sunan an-Nasa'i 4564: > **It was narrated that 'Ubadah bin As-Samit said:** > > The messenger of Allah said: 'Gold for gold, of equal measure; silver > for silver, of equal measure; salt for salt, dates for dates wheat for > wheat, barley for barley, like for like. **Whoever gives more** or > takes more has engaged in Riba.' (Sahih) The wording is that of > Muhammad Yaqub did not mention - "Wheat for wheat".