Tracing Tawatur Of Quran's Variant Readings (Nafi Vs. Hafs)
The historical knowledge confirms that the qirat introduced to Morocco was later in years. As far as the claim of Tawatur is concerned this is made for all variants but the factual position is that none of qirat could ever become a Tawatur other than the one which is still Mutawatar.
To shahzad sahab agar imam asim ne apna ikhtiyar istemal nahi kiya aur unse hafs ne vahi riwayat kiya jo unhone padaya tha to unke dusre shagird shauba se dusri qirat kyu sabit hai