ubai is poetic couplet tradition of Persian language. The Rubai is a quatrain creation in which the first, second and fourth lines are written in rhyme where as the third line is completely different creation. One such quatrain is called Rubai and the collection of such quatrain is called Rubaiyyat. In 11th century, Persian poet Omar Khayyam has started this style of poetry writing and it comes to Nepal too. And Prakash Angdembe is one of the most promising quatrain poet of Nepal.