Tafsir of - Al-Ankaboot_en.qaribullah TafsirHub

29:48
48
وَمَا كُنْتَ تَتْلُو مِنْ قَبْلِهِ مِنْ كِتَابٍ وَلَا تَخُطُّهُ بِيَمِينِكَ ۖ إِذًا لَارْتَابَ الْمُبْطِلُونَ
And you (O dear Prophet Mohammed – peace and blessings be upon him) were not reading any Book before it, nor writing with your right hand – if it were, the people of falsehood would surely have doubted.

common.revelation-Meccan
common.hizb : 161

And you did not use to recite before this namely before the Qur’ān any other Book nor did you write it with your right hand for had you been reciting something and writing then those who follow falsehood the Jews would have had doubts about you and would have said ‘What the Torah states is that he will be unlettered ummī unable to read or write’.

وَمَا كُنْتَ تَتْلُو مِنْ قَبْلِهِ مِنْ كِتَابٍ وَلَا تَخُطُّهُ بِيَمِينِكَ ۖ إِذًا لَارْتَابَ الْمُبْطِلُونَ

And you (O dear Prophet Mohammed – peace and blessings be upon him) were not reading any Book before it, nor writing with your right hand – if it were, the people of falsehood would surely have doubted.