Allah said,
[وَأُوْلُواْ 
الأَرْحَامِ بَعْضُهُمْ أَوْلَى بِبَعْضٍ فِي كِتَـبِ اللَّهِ]
(But kindred by blood are nearer to one another (regarding inheritance) in 
the decree ordained by Allah), meaning, in Allah's decision. This Ayah 
encompasses all relatives, not only the degrees of relative who do not have a 
fixed, designated share in the inheritance, as some people claim and use this 
Ayah to argue. According to Ibn `Abbas, Mujahid, `Ikrimah, Al-Hasan, Qatadah and 
several others, this Ayah abrogated inheriting from those with whom one had ties 
of treaties or brotherhood, as was the case in the beginning of Islam. So it 
applies to all relatives, and as for those who do not inherit, then this is 
supported by the Hadith,
«إِنَّ اللهَ قَدْ 
أَعْطَى كُلَّ ذِي حَقَ حَقَّهُ فَلَا وَصِيَّةٍ لِوَارِث»
(Indeed Allah had alloted every right to the one who deserves it, so there 
may be no will for an heir.)
Therefore, this Ayah also includes those who have a fixed share of 
inheritance. Allah knows best.
This is the end of the Tafsir of Surat Al-Anfal, all praise and thanks are 
for Allah, in Him we trust, and He is sufficient for us, what an excellent 
supporter He is.