Hasan al-Basri (may Allah have mercy on him) said: "If someone claims a debt of one thousand dirhams against a deceased person, and the deceased left two sons and two thousand dirhams in wealth, and one of them acknowledges (the debt) while the other denies it, then the one who acknowledged it will be liable for five hundred dirhams."
Hadith Referenceسنن سعید بن منصور / كتاب ولاية العصبة / 1494
Hadith Takhrij«أخرجه سعيد بن منصور فى «سننه» ترقيم الدرالسلفية برقم:، 317، وابن أبى شيبة فى «مصنفه» برقم: 31648»