صحيح الادب المفرد
Sahih al-Adab al-Mufrad
Part Four: Ahadith 751 to 999
باب جواب الكتاب
Chapter on Replying to Letters
Hadith Number: 854
854/1117 (حسن الإسناد) عن ابن عباس قال: إني لارى لجواب الكتاب حقا كرد السلام".
854/1117 (Hasan al-Isnad) from Ibn Abbas who said: "Indeed, I see that replying to a letter is a right just as replying to salam."
تخریج الحدیث: