Ramayana
नारदः पर्वतश्चैव मम दत्त्वा महद्भयम् । गतौ त्रिभुवनं भद्रौ वायुभूतावनिन्दितौ ॥ 7-54-7 ॥
Narada and Parvata, those two blessed and blameless ones, having given me great cause for fear, departed to the three worlds, becoming as it were creatures of the wind.
english translation