After Sugreeva recited the Dundubhi story, he showed Rama
the demon's carcass, which lay nearby. He then told Rama the truth about
making Rishyamookha his hiding spot.
He informed Rama that the famous sage Matang Muni lived in the
Rishyamookha mountain. When Bali had swung the battered body of
Dundubhi from Kishkindha, it fell inside his ashram. The sage had
become enraged because he had built the ashram after years of worship and
used to organise his Yajnas here. Matang Muni roared, "Who dares to
sully my ashram with a blood-smeared corpse?" When no answer came, he
sat down in deep meditation and discovered the name Bali. In a fury, the
sage cursed Bali and his men by saying that if ever they entered the
forests of Rishyamookha they would be destroyed. Sugreeva thus added that
because Bali would hunt him down wherever he went, he took shelter in
these forests knowing that he could not enter it.