Famous Shiite jurisprudents consider alimony of wife as a custom, while the traditions and fatwas of the old jurists consider alimony as predetermined. In the history of this jurisprudential issue, the Mabsut of Sheikh-e Tusi is a turning point in the conversion of predetermined alimony to customary alimony. Sheikh-e Tusi, the great Shiite jurisprudent, has used Shafi‘i jurisprudence in this development. The effect that Sheikh-e Tusi has on jurisprudence in this regard is the main issue of this article. This article criticizes the model of Sheikh-e Tusi in the development of jurisprudence by examining the alimony of the wife in Shiite and Sunni jurisprudential books before the Mabsut and jurisprudential books after the Mabsut.