Which is the most careful grammatical assessment of mā taʿbudūn?

Supplementary Practice 22: Comparative Rhetorical Study of Sūrat al-Kāfirūn and al-Naṣr

• It is exclusively and unanimously a negative particle
• A relative reading is well established, while some discussions allow a maṣdariyyah analysis
• It is necessarily interrogative
• It is a conditional particle making the imperfect jussive