Shiva Purana
इत्युक्तं गिरिजाग्रे हि शिवेन परमात्मना । भस्मरूद्रा क्षमाहात्म्यं भुक्तिमुक्तिफलप्रदम् ८८ ।
Thus, the greatness of ash and Rudrākṣa that bestow worldly pleasures and salvation, was explained to Girijā by Śiva, the supreme soul.
english translation
ityuktaM girijAgre hi zivena paramAtmanA । bhasmarUdrA kSamAhAtmyaM bhuktimuktiphalapradam 88 ।
hk transliteration by Sanscript