sentences:  The teaching appeared early.References to the decline of the Dharma over time can be found in such Mahayana sutras as the Diamond Sutra and the Lotus Sutra, but also to a lesser degree in some texts in the Pāli Canon such as the "Cullavagga" of the Vinaya Pitaka.Nanyue Huisi was an early monk who taught about it; he is considered the third Patriarch of the Tiantai.