大般涅槃經義記 4.11

4.11

In the first pair, 'by this meaning' means that because the one-sided graspings of ordinary beings are all matters of annihilation and permanence, according to the principle one must study both together. 'Cultivating other dharmas as suffering is all named unwholesome; cultivating other dharmas as bliss is named wholesome': learning and contemplating is called 'cultivating'; suffering is saṃsāra and bliss is nirvāṇa; contrasting them to distinguish their difference is why it says 'other.' Unwholesome is the cause of suffering, and the cause is named after the fruit, hence it is called suffering; alternatively, the fruit of suffering is designated from the cause and spoken of as unwholesome. Wholesome is the cause of bliss, and the cause is named after the fruit, spoken of as bliss; alternatively, the fruit of bliss is named from the cause and therefore spoken of as wholesome.