Are there pronouns in the Qur’an whose referent differs, and is this phenomenon worthy of study? What are the books that have addressed this phenomenon or the verses in which the pronoun's referent is disputed?

In the Holy Qur’an, there are many pronouns about whose referents the exegetes have differed. This difference is not one of disparity and contradiction, but rather one of diversity, ijtihad (definition) (independent reasoning), and expansion of meaning. Disagreement over the pronoun’s referent may lead to differences in practical jurisprudential rulings. No specific book addressing this topic has been identified, but it is abundantly found scattered throughout books of exegesis (tafsir (definition)) and Qur’anic sciences.