ما الدليل أو نص قول ابن الجزري الذي يثبت أن الإقلاب والإخفاء الشفوي يكونان بالفرجة؟

The issue of whether to close the lips completely or leave a slight gap when pronouncing the letter nun followed by ba (Iqlab - قلب) and the letter mim followed by ba (Ikfaa’ Shafawi - إخفاء شفوي) is a point of contention among later reciters. Some scholars advocate for complete closure (Itbaq - إطباق), others for leaving a slight gap, and some permit both depending on what was received through transmission.

Ibn Al-Jazari chooses Ikfaa’ (concealment), which implies leaving a gap to allow air to pass through, as complete closure would make the mim apparent rather than concealed. Nevertheless, there are texts from advanced reciters such as Ibn Ghalboun and Al-Dani that explicitly state the lips should be closed for the mim when followed by ba, while still being concealed.

Many contemporary reciters have received the Quran with the practice of complete labial closure (Itbaq) from their teachers, and some have mentioned that the practice of leaving a gap is a recent scholarly interpretation. Conversely, others believe that a slight gap is the more correct method for achieving concealment (Ikfaa’) and have reported from their teachers that leaving a gap is preferable or necessary to distinguish concealment from clear pronunciation (Izhar - إظهار).