The word(s) "blood-relations" appears 2 time(s) in 2 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) The Prophet is closer to the Believers than their own selves, and his wives are their mothers. blood-relations among each other have closer personal ties, in the Decree of Allah. Than (the Brotherhood of) Believers and Muhajirs: nevertheless do ye what is just to your closest friends: such is the writing in the Decree (of Allah).

(2) And they have invented a blood-relationship between Him and the Jinns: but the Jinns know (quite well) that they have indeed to appear (before his Judgment-Seat)!