وَوَصَّى بِهَا إِبْرَاهِيمُ بَنِيهِ وَيَعْقُوبُ يَا بَنِيَّ إِنَّ اللّهَ اصْطَفَى لَكُمُ الدِّينَ فَلاَ تَمُوتُنَّ إَلاَّ وَأَنتُم مُّسْلِمُونَ
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سورة البقرة
(2/132) And Ibrahim enjoined his sons the same and did Ya´qub also, saying: O my sons! verily Allah hath chosen for you the religion, so die not except ye be Muslims.
Surah Al-Baqarah