CC Madhya 2.84
teṅho thuilā raghunāthera kaṇṭhe
tāhāṅ kichu ye śuniluṅ, tāhā ihāṅ vistāriluṅ,
bhakta-gaṇe diluṅ ei bheṭe
All the activities of Śrī Caitanya Mahāprabhu were noted by His personal secretary Svarūpa Dāmodara and repeated to Raghunātha dāsa Gosvāmī, who memorized them. Whatever Kṛṣṇadāsa Kavirāja Gosvāmī heard is recorded in Śrī Caitanya-caritāmṛta. This is called the paramparā system, from Śrī Caitanya Mahāprabhu to Svarūpa Dāmodara to Raghunātha dāsa Gosvāmī to Kavirāja Gosvāmī. Kṛṣṇadāsa Kavirāja Gosvāmī has distributed this information in his book Caitanya-caritāmṛta. In other words, Śrī Caitanya-caritāmṛta is the essence of the instruction given through the paramparā system of the disciplic succession stemming from Śrī Caitanya Mahāprabhu.