Learn Farsi: او معلول است و ما برایش ماشینی خریدیم تا راحت باشد. - He is disabled, and we bought a car for him so that he would be comfortable.

It combines the preposition barâye (for) and the third-person singular pronoun suffix -ash (him). Because barâye ends in a vowel sound, a -y- glide is inserted to connect them smoothly without two vowels clashing. This creates barâ-y-ash (برایش).

Is there a difference in meaning between using the attached barâyash and the separate words barâye u?

No, the meaning is exactly the same. Attaching the pronoun suffix as a clitic (barâyash) is very common and helps the sentence flow more naturally, especially in conversation, but you could absolutely say barâye u mâšini xaridim instead.

What is the function of the -i attached to the end of mâšini?

Here, the -i suffix is the indefinite marker, translating to 'a' or 'an'. It shows that they bought 'a car' rather than a specific known car. Without it, mâšin would sound like a general category or a specific car, depending on context.

Why does the sentence use the verb bâšad instead of ast at the end?