Shiva Purana
अच्युत उवाच । त्वया प्रयत्नेन पुरा हि दत्तं यदस्य पंचाननमीशचिह्नम् । तस्मात्क्षमस्वाद्यमनुग्रहार्हं कुरु प्रसादं विधये ह्यमुष्मै ७ ।
Acyuta said: O Lord, it was you who gave him five heads॥ 1॥ as a special symbol, long ago. Hence please forgive him his first guilt. Please favour him.
english translation
acyuta uvAca । tvayA prayatnena purA hi dattaM yadasya paMcAnanamIzacihnam । tasmAtkSamasvAdyamanugrahArhaM kuru prasAdaM vidhaye hyamuSmai 7 ।
hk transliteration by Sanscript