Shiva Purana
नैत्यिकं सकलं कामं विधायानंतरं पुमान् । शिवस्मरणपूर्वं हि भस्मरुद्रा क्षधारकः ३ ।
After finishing the daily rites he shall apply ashes and wear Rudrākṣa, all along remembering Lord Śiva.
english translation
naityikaM sakalaM kAmaM vidhAyAnaMtaraM pumAn । zivasmaraNapUrvaM hi bhasmarudrA kSadhArakaH 3 ।
hk transliteration by Sanscript