Possessive pronouns in Dari are the same as the personal pronouns, as if in English we were to say "he book" to mean "his book." The possessive pronoun is linked to the noun by the "Ezafa," which is pronounced as the short vowel, e, and therefore not shown in writing.
" my book" ketaab-e man کتاب من
"your mother" maadar-e shomaa مادر شما
"their ball" tup-e aanhaa توپ آنها
The second person plural pronoun شما "you" is generally but not always used to show possession in both the singular and the plural second person.
The third person plural pronoun has its polite equivalent ایشان.
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