It wasnarrated that Ma'qil bin Yasar said:
"The Messenger of Allah(ﷺ) ruled concerning a grandfather who was among us, that he shouldreceive one sixth." (JA)
English reference (JA): Vol. 4, Book 23, Hadith 2723 (JA)
Arabic reference (JA): Book 23, Hadith 2827 (JA)