One way in is the Arabic word behind it: the one who gives the formal opinion. That picture carries the first meaning straight through - a scholar who is asked and who answers. The British phrase in mufti shares the spelling and the history, but the evidence here does not show how the word travelled from the scholar to a soldier's ordinary clothes, so that use is given its own picture instead of being pushed back onto this one.
「mufti」可以從阿拉伯文的意思進去：「給出正式意見的人」。第一個意思直接就是這張圖——有人來問，他給出正式的答案。英式片語 in mufti 拼法和來歷相同，但手上的資料沒有說明它怎麼從「學者」走到「便服」，所以這裡不硬把它接回來，另外給它一張自己的圖。
From the word’s history
Borrowed from Ottoman Turkish mufti, from Arabic mufti, literally the deliverer of a formal opinion. That is the scholar sense exactly: someone whose role is to be asked and to answer.
字源資料說它借自鄂圖曼土耳其文 müfti，再往前是阿拉伯文 muftī，字面就是「給出正式意見的人」。這正好就是第一個意思：他的角色是被問、然後回答。
Wiktionary, "mufti"
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