仁王經疏 2.171

2.171

問：十信位有不退不？此有兩釋。一云：亦有不退。故《本業經》第一卷說。十信第六名不退心。而與十住有差別者，十住第七住位不退，十信第六唯信不退。一云：無不退義。是故此經第六名施，《本業》第二自說戒心。由斯十住第六已前一向是退，第七住後方名不退。而言十信第六不退者，譯家謬也。

Question: In the stage of the ten faiths, is there non-retrogression or not? Here there are two explanations. One says: There is also non-retrogression. Thus the first fascicle of the Benye jing says that the sixth of the ten faiths is named the "non-retrogressing mind." The difference between this and the ten abidings is that the seventh of the ten abidings is non-retrogression in stage, whereas the sixth of the ten faiths is non-retrogression in faith alone. Another says: There is no sense of non-retrogression. For this reason, the sixth in this sūtra is named "giving," while the second fascicle of the Benye itself speaks of the "mind of morality." From this, all prior to the sixth of the ten abidings are consistently retrogressive, and only after the seventh abiding are they named non-retrogressing. As for saying that the sixth of the ten faiths does not retrogress, that was an error of the translator.