Linguistic style: Khulusi identifies Ibn al-Muqaffa' as a Mutarassil (epistolary writer) as opposed to a Musajji' (rhymed-prose writer). The Nights is more akin to Tarassul than to saj'. He points out that although The Nights has had significant changes and additions by various contributors, parts of it still retains the distinct vocabulary and style of Ibn al-Muqaffa'.