 Warder have argued that only the material which is common to both the Sthavira and the Mahasamghika canons can be seen as the most authentic, since they were the first communities after the first schism.The problem is that there is little material surviving from the Mahasamghika school.However, what we do have, such as the Mahasamghika pratimoksha and vinaya, is mostly consistent in doctrine with the Sthavira texts.