唯識二十論述記 1.21

1.21

就初分中，大文有二：初、立論宗大乘三界唯識無境；後、即於此義有設難言；下釋外所徵，廣破異執。

Within the first section, there are two major parts: first, establishing the treatise's tenet that the Mahāyāna [teaching of] the three realms is vijñapti-mātra without external objects; second, regarding this meaning, an objection is raised; below, it resolves external challenges and broadly refutes divergent attachments.