He demanded payment from Ibn Abu Hadrad for a debt owed to him, and this took place in the mosque. Their voices grew so loud that the Messenger of Allah ﷺ heard them from inside his house. He came out to them and called out to Kaab.Kaab said, "At your service, Messenger of Allah."The Prophet ﷺ said, "Reduce this debt of yours," and he gestured with his hand indicating half.Kaab said, "I have done so."The Prophet ﷺ said to Ibn Abu Hadrad, "Get up and pay him."
حدثنا محمد بن يحيى ويحيى بن حكيم قالا حدثنا عثمان بن عمر أنبأنا يونس بن يزيد عن الزهري
أنه تقاضى ابن أبي حدرد دينا له عليه في المسجد حتى ارتفعت أصواتهما حتى سمعهما رسول الله ﷺ وهو في بيته فخرج إليهما فنادى كعبا فقال لبيك يا رسول الله قال دع من دينك هذا وأومأ بيده إلى الشطر فقال قد فعلت قال قم فاقضه
Bukhari narrated it, chapter on demanding repayment and staying persistently at the masjid, Prayer, no. 457, and Muslim, chapter on the recommendation of reducing a debt, Sharecropping, no. 1558, from the hadith of Uthman bin Umar with this chain.