One of the rules of numbersis making attributive nouns out of the words signifying numbers.An attributive noun is proportional to the type of the number.However,thereis no specific rule mentioned for this. It is obvious that it is sometimesmadeby the rhythm "fual" whichisprobablyformed by the attributive ya for instancein "thulath", "ruba" "thulathi" and "rubai". The fomwtion of an attributivenounout of numbersis allowedasfar asthe attributive rules are concerned, for examplein "wahidi" derivedfrom "wahid" and "arbai" from "arbaat". In a compound form of numbers called "mazji" or mingled compound, an attributive noun is made out of the role related to the attributed noun, for instancein "tisi" derived from "tisat ashar" or "tisat ashari "as it is said "al-shiat al_ithna ashariyah". Attributive rulesin making "uqud" numbers are derived with the help of a joining element, namely attributive ya" as in "khamsooni "attributed to "khamsoon" and in "joined numbers "ma toof the attributive ya" element is attachedto bothparts.