• rikāz—pronounced with a kasrah on the rāʾ, a light fathah on the kāf, followed by an alif and ending with a zāʾ—refers to pre-Islamic buried treasure discovered underground; the term is used exclusively for something that has been interred.

• In the clause “and on rikāz,” the phrase “on rikāz” is the fronted predicate, while the subject is al-khumus (the one-fifth).

• al-khumus (one-fifth), read with ḍammah on both the khāʾ and the mīm and a sukūn on the mīm, has the plural form akhmās; linguistically it denotes one part out of five equal parts of a thing.