Ibrahim Nakha'i (may Allah have mercy on him) said: "If a person makes a bequest of half, a third, and a quarter of his wealth, then twelve dirhams will be assumed; half of them is six dirhams, a third is four dirhams, and a quarter is three dirhams. Then the wealth will be divided into thirteen parts; the one with half will get six, the one with a third will get four, and the one with a quarter will get three shares."
Hadith Referenceسنن سعید بن منصور / كتاب ولاية العصبة / 1558
Hadith Takhrij«أخرجه سعيد بن منصور فى «سننه» ترقيم الدرالسلفية برقم:، 381، والبيهقي فى«سننه الكبير» برقم: 12717، وابن أبى شيبة فى «مصنفه» برقم: 31439»