It is narrated from Qasim bin Umar that Thumamah bin Hazn said to me: What happened to your father? I replied: He has passed away. He said: Did he make a will? Because it was said that when a man makes a will, his will compensates for what was deficient from his zakat. Imam Darimi (may Allah have mercy on him) said: Others have said Qasim bin Amr.
Hadith Referenceسنن دارمي / من كتاب الوصايا / 3210
Hadith Gradingتحقیق (حسین سلیم أسد الدارانی):إسناده جيد إلى ثمامة، [مكتبه الشامله نمبر: 3221]
Hadith Takhrijاس روایت کی سند ثمامہ تک جید ہے۔ دیکھئے: [ابن أبى شيبه 19082] ، [عبدالرزاق 16330] ، [ابن منصور 346]