أَوْ تَقْدِيرِيًّا، نَحْوُ: «جَاءَنِي مُوسَىٰ، وَرَأَيْتُ مُوسَىٰ، وَمَرَرْتُ بِمُوسَىٰ».
Translation: Or the variation may be estimated (not pronounced), as in: “Mūsā came to me; I saw Mūsā; and I passed by Mūsā.”
The written and pronounced form «مُوسَىٰ» stays the same, but its syntactic case is first nominative, then accusative, then genitive. Its final alif maqṣūra cannot carry an overt case vowel.