Canto 3 -
Araṇya-kāṇḍa
Chapter 69: Rāma and Lakṣmaṇa Meet Kabandha
Text 3.69.24

तयोरन्वेषतोरेवं सर्वं तद्वनमोजसा।
संजज्ञे विपुलः शब्दः प्रभञ्जन्निव तद्वनम्॥

tayor anveṣator evaṁ sarvaṁ tad vanam ojasā
saṁjajñe vipulaḥ śabdaḥ prabhañjann iva tad vanam

tayoḥ = They; anveṣatoḥ = searched; evam = after He spoke thus; sarvam = all over; tat = the; vanam = forest; ojasā = by dint of Their prowess; saṁjajñe = came about; vipulaḥ = [when] a loud; śabdaḥ = sound; prabhañjan = to break apart; iva = that seemed; tat = the; vanam = forest.

After He spoke thus, They searched all over the forest by dint of Their prowess [when] a loud sound came about that seemed to break the forest apart.1

1 Rāmāyaṇa-bhūṣaṇa: evam etādṛśokti-pūrvakam.