(ض) بَانَ يَبِيْنُ بَيْنًا وَبَيَانًاbāna yabīnu baynan wa-bayānan: for a thing to separate from another so that what lies between becomes clear, as when the pages of a book are parted from one another the writing can be read: (1) to be separate (2) to be in between (3) to be clear. ﴿عَلَّمَهُ الْبَيَانَ﴾ (Ar-Raḥmān 55:4)
بَيْنَ يَدَيْbayna yaday: between the two hands, in front of. ﴿يَعْلَمُ مَا بَيْنَ اَيْدِيْهِمْ وَمَا خَلْفَهُمْ﴾ (Al-Baqarah 2:255)
بَيِّنٌbayyin (adjective on the pattern بَيِيْنٌbayīn, فَيْعِلfayʿil): clear always and in every state; it generally occurs as an attribute of a proof, and the qualified noun is often elided. ﴿وَلَقَدْ اَنْزَلْنَآ اِلَيْكَ اٰيٰتٍۢ بَيِّنٰتٍ﴾ (Al-Baqarah 2:99); ﴿حَتّٰى تَاْتِيَهُمُ الْبَيِّنَةُ﴾ (Al-Bayyinah 98:1)
Form II (tafʿīl) بَيَّنَ يُبَيِّنُ تَبْيِيْنًاbayyana yubayyinu tabyīnan: to make thoroughly clear. ﴿لِتُبَيِّنَ لِلنَّاسِ مَا نُزِّلَ اِلَيْهِمْ﴾ (An-Naḥl 16:44)
Form IV (ifʿāl) اَبَانَ يُبِيْنُ اِبَانَةًabāna yubīnu ibānatan: to make clear, to be clear. ﴿وَلَا يَكَادُ يُبِيْنُ﴾ (Az-Zukhruf 43:52)
مُبِيْنٌmubīn (active participle, ism fāʿil): that which becomes clear, clear. ﴿وَكِتٰبٌ مُّبِيْنٌ﴾ (Al-Māʾidah 5:15)
Form V (tafaʿʿul) تَبَيَّنَ يَتَبَيَّنُ تَبَيُّنًاtabayyana yatabayyanu tabayyunan: (1) to separate oneself deliberately, to part (2) for a thing to become clear of itself (3) for the mind to become clear about a thing through effort, i.e. to investigate, to inquire. ﴿قَدْ تَّبَيَّنَ الرُّشْدُ مِنَ الْغَيِّ﴾ (Al-Baqarah 2:256); ﴿اِنْ جَآءَكُمْ فَاسِقٌۢ بِنَبَاٍ فَتَبَيَّنُوْٓا﴾ (Al-Ḥujurāt 49:6)
Form X (istifʿāl) اِسْتَبَانَ يَسْتَبِيْنُ اِسْتِبَانَةًistabāna yastabīnu istibānatan: (1) to seek clarity (2) to become clear. ﴿وَلِتَسْتَبِيْنَ سَبِيْلُ الْمُجْرِمِيْنَ﴾ (Al-Anʿām 6:55)
مُسْتَبِيْنٌmustabīn (active participle, ism fāʿil): that which becomes clear. ﴿وَاٰتَيْنٰهُمَا الْكِتٰبَ الْمُسْتَبِيْنَ﴾ (Aṣ-Ṣāffāt 37:117)