Shiva Purana
तस्मात्सर्वप्रयत्नेन कृत्वा पाशुपतव्रतम् ॥ धनवद्भस्म संगृह्य भस्मस्नानरतो भवेत् ॥ ९८ ॥
Hence one should endeavour in all possible ways to collect Bhasma like wealth after performing the Pāśupata vrata and be engaged in Bhasma-bath.
english translation
tasmAtsarvaprayatnena kRtvA pAzupatavratam ॥ dhanavadbhasma saMgRhya bhasmasnAnarato bhavet ॥ 98 ॥
hk transliteration by Sanscript