Kilā/Kiltā in Three Cases

Tawkīd: Verbal and Semantic Emphasis

جَاءَ الرَّجُلَانِ كِلَاهُمَا: kilāhumā nominative with alif.
رَأَيْتُ الرَّجُلَيْنِ كِلَيْهِمَا: kilayhimā accusative with yāʾ.
مَرَرْتُ بِالرَّجُلَيْنِ كِلَيْهِمَا: kilayhimā genitive with yāʾ.

Likewise, with a pronoun: kiltāhumā (nominative) and kiltayhimā (accusative/genitive). These are additional teaching examples.