We understand that with the breathing of the Supreme Personality of Godhead there issued forth the four Vedas, namely the Ṛg Veda, the Yajur Veda, the Sāma Veda and the Atharva Veda, and also the histories like the Mahābhārata and all the Purāṇas, which are considered to be the history of the world. The Vedic histories like the Purāṇas and Mahābhārata are called the fifth Veda.
The twenty-eight verses of the Veda-stuti are to be considered the essence of all Vedic knowledge. The four Kumāras and all other authorized sages know perfectly that devotional service in Kṛṣṇa consciousness is the essence of all Vedic literature, and they preach this on different planets, traveling in outer space. It is stated herein that such sages, including Nārada Muni, hardly ever travel on land; they perpetually travel in space.