In Arabic "rubai'i" refers to a type of 4-line verse, & this is a book of them, like Omar Khayyam's
... Ivrigt gives interessante Oplysninger om Omar 
og de originale Rubai i Arthur ... Drives Night along with them from Heav'n, and 
strikes [DOC] [TLE] Best Tent Poems [PAR] Search for Tent poems, articles about Tent poems, poetry blogs, or anything ... 
Rubai'i: Umar ibn Ibrahim al-Khayyam, Omar son of Ibrahim, the tent-maker by ...