Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) said: The verse "O you who believe, when you contract a debt for a fixed term, write it down" [Surah al-Baqarah: 282]
"And if one of you entrusts another" [Surah al-Baqarah: 283] abrogated the earlier verse.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب آداب القاضي / 20513