法華義疏 5.309

5.309

「我當為說怖畏之事」下，第二、明誡門說大乘化物不得也。就譬而言，以衣裓机案出子不得，今直說怖畏之事令子速出；前說法身功德既不信受，今說生死過患令出三界也。

From "I should speak to them of fearful matters" below, the second part shows the failure to convert beings through the gate of admonition by preaching the Mahāyāna. In terms of the parable, having failed to bring the children out with garments and low tables, he now directly speaks of fearful matters to cause the children to quickly come out; having previously preached the virtues of the dharmakāya which they did not believe and accept, he now speaks of the faults and perils of saṃsāra to cause them to leave the three realms.