The types of Believers

"Then We caused Our chosen servants to inherit the Book. Among them are self-oppressors , among them are frugal ones and from them are thus who rush forth to perform good deeds , by the Permission of Allah" (35,32)

There are three main types of believers:

1. Saabiqoon ilal-khayraat (those who rush to do good deeds): Those who rush to do good deeds are those who perform both the obligatory and recommended deeds , while avoiding both  the prohibited and disliked affairs.
2. Muqtasidoon (those who are frugal and selective): The frugal ones are those who restrict themselves to performing only those deeds that are obligatory , while avoiding only the prohibited affairs, (meaning that they fall into dislike affairs and they leave off recommended deeds).
3. Thaalimon li Anfusihim (those who oppress themselves): Those who oppress themselves are those who mix  good deeds with the bad ones. ( meaning that they fall into prohibited affairs and leave off obligations.)

 SOURCE:  Essential questions and anwers concerning the foundations of Imaan and obstacles in the path of Imaan of  Shaykh Abdur-Rahman As Sa'dee (Rahimahu Allah)
Question 9, pag. 31-32