俱舍論疏 24.139

24.139

論「名雖有八至不離前果故」，釋。雖就所成就法分人有八，然實能成人有五種，謂初果向及第四果各有一人，第二果向及住初果同是一人，住第二果及第三向亦同一人，住第三果及第四向亦同一人也，由此實人唯有五別。

On the Śāstra's statement: "Although there are eight in name, up to because they are not separate from the preceding fruit": This is the explanation. Although persons are divided into eight in terms of the dharmas they possess, in reality the persons capable of accomplishing them are of five kinds: the practitioner on the path to the first fruit and the fourth fruit each constitute one person; the practitioner on the path to the second fruit and the one abiding in the first fruit are the same person; the one abiding in the second fruit and the practitioner on the path to the third fruit are also the same person; the one abiding in the third fruit and the practitioner on the path to the fourth fruit are also the same person. Thus, real persons are differentiated into only five.