ب و بb-w-b
— بَابbāb pl. أَبْوَاب وَبِيْبَانabwāb wa-bībān: door, gate; and figuratively the means of entry into a thing, also a chapter of a book. The original form is بَوَبbawab, the wāw having changed into alif. 27 times in the Quran, each time as a noun: ﴿وَادْخُلُوا الْبَابَ سُجَّدًا﴾ (Al-Baqarah 2:58); ﴿لَهَا سَبْعَةُ أَبْوَابٍ﴾ (Al-Ḥijr 15:44); ﴿وَغَلَّقَتِ الْأَبْوَابَ﴾ (Yūsuf 12:23)