فَدَارِهِمْ مَا دُمْتَ فِي دَارِهِمْ
Treat them gently as long as you remain in their home.
The first “dārihim” is an imperative from the verb of considerate dealing: deal kindly with them. In the second “dārihim,” “dār” is a noun meaning home, followed by a possessive pronoun.
The sound sequence matches while meaning and grammatical word class differ. This makes the expression a familiar example of complete jinās, specifically mustawfā, with the grammatical analysis providing the proof.