Explain the function of 'al-isti'ara al-makniyya' (الاستعارة المكنية) and how it differs from 'al-isti'ara al-tasrihiyya' (الاستعارة التصريحية).

'Al-isti'ara al-makniyya' (الاستعارة المكنية), or 'implied metaphor', and 'al-isti'ara al-tasrihiyya' (الاستعارة التصريحية), or 'explicit metaphor', are two types of 'isti'ara' (استعارة - metaphor) in Arabic rhetoric. A metaphor, in general, is a figure of speech that involves an implicit comparison between two unlike things. The key difference lies in *how the comparison is presented*. In 'al-isti'ara al-makniyya', the *thing being compared (the 'musta'ar lahu' - المستعار له) is not explicitly mentioned*. Instead, only a characteristic or attribute associated with it is used to describe the other thing (the 'mus....