 In sum, be aware of the fact that that for which it is possible to be necessary is always necessary (mā yumkinu an yaṣīra ḍarūriyyan fa-huwa ḍarūriyyun dāʾiman) and that it may [also] be possible in the more general sense (wa-amkanahū l-imkān al-aʿāmm). (Qiyās IV.3, 203.4–5) 