Tarakabrahma Mantra (Sanskrit: तारकब्रह्ममन्त्र, IAST: Tārakabrahmanmantra), also is called Tarakabrahma Nama, is the mahamantra of every yuga according to the yuga cycle of Hinduism. Mantras are all enshrined in Vedic literature. These are various to the four yugas, and the Hare Krishna mahamantra is to kali yuga.[1] The Hare Krishna mantra is composed with the three names of the supreme power: Hare, Krishna, and Rama.[2][3][4]
^Rosen, S. (2006). Essential Hinduism. Praeger Publishers. ISBN0-275-99006-0.P.4: It was preserved in the confidential sampradayas, or esoteric lineages, that were guardian to these truths from the beginning. p.244:
In a more esoteric sense, the word "Hare" is a vocative form of "Harā," which refers to Mother Harā, or Sri Radha.