Valmiki Ramayana Ayodhya Kanda Sarga 93 Shloka 10
Original Shlokaमुञ्चन्ति कुसुमान्येते नगाः पर्वतसानुषु। नीला इवातपापाये तोयं तोयधरा घनाः।।2.93.10।।
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पर्वतसानुषु on the mountain ridges, एते नगाः these trees, आतपापाये at the end of summer, नीलाः blue, घनाः dense, तोयधराः rainclouds, तोयम् इव like showers, कुसुमानि flowers, मुञ्चन्ति are shedding.
The trees on the mountain ridges are shedding flowers, like dense blue rainclouds showering water at the end of summer.