وَالَّذِينَ آمَنُوا مِن بَعْدُ وَهَاجَرُوا وَجَاهَدُوا مَعَكُمْ فَأُولَٰئِكَ مِنكُمْ ۚ وَأُولُو الْأَرْحَامِ بَعْضُهُمْ أَوْلَىٰ بِبَعْضٍ فِي كِتَابِ اللَّهِ ۗ إِنَّ اللَّهَ بِكُلِّ شَيْءٍ عَلِيمٌ
“And those who believed after [the initial Emigration] and Emigrated and fought with you - they are of you. But those of [blood] relationship are more entitled [to inheritance] in the decree of Allah. Indeed, Allah is Knowing of all things.”
This ayah (Q8:75), which shifted inheritance rights from the muakha brotherhood bond back to blood relations, is the Qur'an's own reference to the pairing instituted at this event.
Surah al-Anfal was revealed on the plains of Badr regarding the battle and its aftermath.