This is the 174th most frequent Urdu word.
والا
"والی" means "one associated with" or "having."
The word 'والا' is used here to create a noun phrase indicating the individual performing the action of reading.
یہ کتاب پڑھنے والا بہت ذہین ہے۔
The person reading this book is very intelligent.
The word 'والا' is used to describe someone involved in the action of working.
یہ کام کرنے والا فرد بہت محنتی ہے۔
The person doing this work is very hardworking.
The word 'والا' is used to attribute the action of buying the house to the man.