أَيْ بُنَيَّ، إِنِّي وَإِنْ لَمْ أَكُنْ عُمِّرْتُ عُمُرَ مَنْ كَانَ قَبْلِي، فَقَدْ نَظَرْتُ فِي أَعْمَالِهِمْ ، وَفَكَّرْتُ فِي أَخْبَارِهِمْ ، وَسِرْتُ فِي آثَارِهِمْ، حَتَّى عُدْتُ كَأَحَدِهِمْ، بَلْ كَأَنِّي بِمَا انْتَهَى إِلَيَّ مِنْ أُمُورِهِمْ قَدْ عُمِّرْتُ مَعَ أَوَّلِهِمْ إِلَى آخِرِهِمْ، فَعَرَفْتُ صَفْوَ ذلِكَ مِنْ كَدَرِهِ، وَنَفْعَهُ مِنْ ضَرَرِهِ، فَاسْتَخْلَصْتُ لَكَ مِنْ كُلِّ أَمْرٍ نَخِيلَهُ، وَتَوَخَّيْتُ لَكَ جَمِيلَهُ، وَصَرَفْتُ عَنْكَ مَجْهُولَهُ، وَرَأَيْتُ حَيْثُ عَنَانِي مِنْ أَمْرِكَ مَا يَعْنِي الْوَالِدَ الشَّفِيقَ، وَأَجْمَعْتُ عَلَيْهِ مِنْ أَدَبِكَ أَنْ يَكُونَ ذلِكَ وَأَنْتَ مُقْبِلُ الْعُمُرِ وَمُقْتَبَلُ الدَّهْرِ، ذُو نِيَّة سَلِيمَة، وَنَفْسٍ صَافِيَةٍ، وَأَنْ أَبْتَدِئَكَ بِتَعْلِيمِ كِتَابِ اللهِ عَزَّ وَجَلَّ وَتَأْوِيلِهِ، وَشَرَائِعِ الْإِسْلَامِ وَأَحْكَامِهِ ، وَحَلاَلِهِ وَحَرَامِهِ، لَا أُجَاوِزُ ذلِكَ بِكَ إِلَى غَيْرِهِ. ثُمَّ أَشْفَقْتُ أَنْ يَلْتَبِسَ عَلَيْكَ مَا اخْتَلَفَ النَّاسُ فِيهِ مِنْ أَهْوَائِهِمْ وَآرَائِهِمْ مِثْلَ الَّذِي الْتَبَسَ عَلَيْهِمْ، فَكَانَ إِحْكَامُ ذَلِكَ عَلَى مَا كَرِهْتُ مِنْ تَنْبِيهِكَ لَهُ أَحَبَّ إِلَيَّ مِنْ إِسْلاَمِكَ إِلَى أَمْرٍ لَا آمَنُ عَلَيْكَ بِهِ الْهَلَكَةَ وَرَجَوْتُ أَنْ يُوَفِّقَكَ اللهُ فِيهِ لِرُشْدِكَ، وَأَنْ يَهْدِيَكَ لِقَصْدِكَ، فَعَهِدْتُ إِلَيْكَ وَصِيَّتِي هذِهِ.
O’ my child, even though I have not reached the age which those before me have, yet I looked into their behaviour and thought over events of their lives. I walked among their ruins till I was as one of them. In fact, by virtue of those of their affairs that have become known to me it is as though I have lived with them from the first to the last. I have therefore been able to discern the impure from the clean and the benefit from the harm. I have selected for you the choicest of those matters and collected for you their good points and have kept away from you their useless points. Since I feel for your affairs as a loving father should feel and I aim at giving you training, I thought it should be at a time when you are advancing in age and new on the stage of the world, possessing upright intention and clean heart and that I should begin with the teaching of the Book of Allāh, to Whom belongs Might and Majesty, and its interpretation, the laws of Islam and its commands, its lawful matters and unlawful matters and that I should not go beyond these for you. Then I feared lest you should get confused as other people had been confused on account of their passions and (different) views. Therefore, in spite of my dislike for you being so warned, I thought it better for me to make this position strong rather than leave you in a position where I do not regard you safe from falling into destruction. I hoped that Allāh would help you in your straightforwardness and guide you in your resoluteness. Consequently, I wrote this piece of my will for you.