وَمِنْهَا: «أَيْنَ» وَ«أَنَّى» لِلْمَكَانِ بِمَعْنَى الِاسْتِفْهَامِ، نَحْوُ: «أَيْنَ تَمْشِي؟» وَ«أَنَّى تَقْعُدُ؟».
Translation: Ayna and annā can ask about place: “Where do you walk?” and “Where do you sit?”
Here ayna and annā ask about place. The source groups them among indeclinable place expressions; their syntactic position depends on their role in the sentence.