Sa’d b. Abu Waqqas said:God’s Messenger visited me when I was ill and asked whether I had made my will. I replied that I had. He asked how much I had willed and when I told him I had willed all my property away to be devoted to God’s path he asked how much I had left my children. I replied that they were rich and prosperous, whereupon he told me to will away a tenth ; but I kept on telling him it was too little till he finally said, “Will away a third, but a third is a lot.” Tirmidhi transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الفرائض والوصايا / 3072
Hadith Gradingالألبانی:لم تتمّ دراسته | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «صحيح، رواه الترمذي (975 و قال: حسن صحيح)»