[Machine] Indeed, the debt with a specific term that Allah has set in the Book and allowed is called "Salaf". Allah, the Almighty, says: "O you who have believed, when you contract a debt for a specified term, write it down." [Al-Baqarah 282]
أَنَّ السَّلَفَ الْمَضْمُونَ إِلَى أَجَلٍ مُسَمًّى قَدْ أَحَلَّهُ اللَّهُ فِي الْكِتَابِ وَأْذِنَ فِيهِ قَالَ اللَّهُ ﷻ {يَا أَيُّهَا الَّذِينَ آمَنُوا إِذَا تَدَايَنْتُمْ بِدَيْنٍ إِلَى أَجَلٍ مُسَمًّى فَاكْتُبُوهُ} [البقرة 282] الْآيَةُ