Valmiki Ramayana Sundara Kanda Sarga 14 Shloka 40

काञ्चनैः तरुगणैः with golden trees, मारुतेन by the wind, वीजिताम् fanned, किङ्कणी शतनिर्घोषाम् like the tinkling of a hundred anklets, ताम् that (tree), दृष्ट्वा seeing, विस्मयम् wonder, आगमत् struck.

Hanuman was wonderstruck to hear the sound produced by rows of golden trees which stood round the simsupa tree. This sound resembled the tinkling of a hundred anklets when the wind passed through (their leaves).