Surah Al-Mumtahina, Verse 3:
لَن تَنفَعَكُمْ أَرْحَامُكُمْ وَلَا أَوْلَادُكُمْ يَوْمَ الْقِيَامَةِ يَفْصِلُ بَيْنَكُمْ وَاللَّهُ بِمَا تَعْمَلُونَ بَصِيرٌ

Neither your relatives nor your children will benefit you on the Day of Resurrection (against Allah). He will judge between you. And Allah is the All-Seer of what you do.