仁王護國般若波羅蜜多經疏 2.174

2.174

The commentary explains: As for 'nature lineage', the 'nature' mentioned above means that the practiced nature of the previous acquired lineage matures into this nature; hence it is called 'nature'. As for 'lineage', the previous seeds and manifestations act like homogeneous causes to induce and produce this [stage]; hence it is called 'lineage'. That is, the seed of the nature, the nature of the seed.