https://understandquran.com/courses/course-5-urdu/lessons/18d-grammar-with-page-18-pointer-d-third-pair-that-shows-relation-%d8%b1%d9%8e%d9%81%d9%92%d8%b9%d8%8c-%d9%86%d9%8e%d8%b5%d9%92%d8%a8%d8%8c-%d8%ac%d9%8e%d8%b1%d9%91-urdu/