The article considers the philosophical polemics about the self (the pudgala) between "orthodox" Buddhism in the person of Shantarakshita and his direct disciple Kamalashila (8th century) with the "heretical" Buddhist school Vatsiputriya on the material of the chapter "The study of Atman by the Teaching of Vatsiputriyas" (Vatsiputriyaparikalpitatmapariksha) of the section "Atmapariksha" of "Tattvasamgrahapanjika". At the beginning of the article, a brief information on Shantarakshita and his work is given, as well as about Vatsiputriya. According to this school, the pudgala is the actor of karma, the enjoyer of its fruits, the subject of rebirth and experience. The author makes a conclusion about dissimilarity of the philosophical logics of the opponents.