Canto 3 -
Araṇya-kāṇḍa
Chapter 73: Kabandha Requests Śrī Rāma to Visit Śabarī
Text 3.73.28
ऋषेस्तस्य मतङ्गस्य विधानात्तच्च काननम्॥
ṛṣes tasya mataṅgasya vidhānāt tac ca kānanam
ṛṣeḥ = Ṛṣi; tasya = that [hermitage]; mataṅgasya = Mataṅga; vidhānāt = because created; tat ca = a; kānanam = forest grew up there.
Because Mataṅga Ṛṣi created that [hermitage], a forest grew up there.