The person about whom Allah's Messenger (ﷺ) said, "If I were to take a Khalil from this nation (my followers), then I would have taken him (i.e., Abu Bakr), but the Islamic Brotherhood is better (or said: good)," regarded a grandfather as the father himself (in inheritance).
Reference: Sahih al-Bukhari 6738 In-book : Book 85, Hadith 15 USC-MSA web (English) : Vol. 8, Book 80, Hadith 730 (deprecated)
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