Rasarnavasudhakara 2.293

2.293

yathā-
śilā kampaṃ dhatte śiva śiva viyuṅkte kaṭhinatām
aho nārīcchāyām ayati vanitābhūyam ayate |
vadaty evaṃ rāme vivalita-mukhī balkalam uraḥ-
sthale kṛtvā baddhvā kaca-bharam udasthād ṛṣi-vadhūḥ ||

As in:
"The stone trembles; Śiva! Śiva! it casts off its hardness!
Ah, it assumes the form of a woman, it attains the state of a lady!"
While Rāma was speaking thus, the sage's wife, her face averted, placing her bark garment over her chest
and binding her mass of hair, arose.