Strictly literal translation may leave the reader uncertain. The description of the Persian translation explicitly allows departure from the desired closeness in some places when necessary for comprehension. A little additional explanation can prevent a substantial misunderstanding.
Methodological example: if Arabic employs a pronoun whose antecedent is clear in context, but a corresponding pronoun in the target language would mislead a new reader, a brief clarifying phrase may identify the referent. It should explain an established relation, not invent content.
Where possible, keep close translation distinguishable from added commentary so that the translator’s words are not mistaken for the wording of revelation.