Valmiki Ramayana Ayodhya Kanda Sarga 30 Shloka 13

रमण O Charming one महावातसमुद्धूतम् raised by the stormy wind, यत् which, रजः dust, माम् me, अपकरिष्यति will harm, तत् that one, परार्थ्यम् most excellent, चन्दनम् इव like sandal powder, मन्ये shall consider.

I shall regard, O charming Rama, the harmful dust raised by the stormy wind and settled on me as the most excellent sandal powder.