Shiva Purana
गोदावरी महापुण्या ब्रह्मगोवधनाशिनी । एकविंशमुखा प्रोक्ता रुद्र लोकप्रदायिनी १४ ।
Godāvarī is very holy and it quells the sins of murdering a brahmin or slaughtering a cow. It is said to have twentyone mouths and accords Rudraloka.
english translation
godAvarI mahApuNyA brahmagovadhanAzinI । ekaviMzamukhA proktA rudra lokapradAyinI 14 ।
hk transliteration by Sanscript