عَطْشَانُ (“thirsty”) has the feminine عَطْشَى, not ʿaṭshāna; it is likewise a diptote.
جَاءَ رَجُلٌ عَطْشَانُ — A thirsty man came.
مَرَرْتُ بِرَجُلٍ عَطْشَانَ — I passed by a thirsty man.
This is an additional teaching example, not a quotation from the source.