Imam Sha'bi (may Allah have mercy on him) said: It is said that whoever makes a will in which there is no injustice or excess, then for him is the same reward as if he had given charity during his lifetime.
Hadith Referenceسنن دارمي / من كتاب الوصايا / 3211
Hadith Gradingتحقیق (حسین سلیم أسد الدارانی):إسناده صحيح إلى الشعبي، [مكتبه الشامله نمبر: 3222]
Hadith Takhrijاس اثر کی سند شعبی رحمہ اللہ تک صحیح ہے۔ دیکھئے: [ابن أبى شيبه 10979] ، [عبدالرزاق 16329] ، [ابن منصور 245]