وأما المقدمة الثانية: فإن ما لا يخلو عن الحوادث لو ثبت في الأزل لزم ثبوت الحادث في الأزل وهو محال
The second premise says that if something inseparable from originated states existed without beginning, an originated thing would have to exist in eternity—an impossibility.
The reasoning now goes beyond observing changes. It relies on a thing's necessary connection with such states and seeks a contradiction between its alleged eternity and the origination of its conditions.
The central objection is whether an eternal bearer could have an endless sequence of distinct, newly arising states. That possibility must be analyzed rather than simply overlooked.