indefinite terms (الْأَلْفَاظُ المُبـْهَمَة)
أصول الفقه
التعريف :
Terms that apply generally, such as man [meaning: who?] in reference to humans, mā [meaning: which] to others, ayn [maning: where] in relation to place; matā [meaning: when] in relation to time; and ayy [meaning: that] which is used in all cases.