Shiva Purana
स ऋषिश्चापि सुप्रीत्या स्वाचम्य विधिपूर्वकम् ॥ पपौ दिव्यं जलं तच्च पीत्वा सुखमवाप ह ॥ १८ ॥
The sage performed the Ācamana duly with great pleasure and drank the divine water. On drinking it he derived great happiness.
english translation
sa RSizcApi suprItyA svAcamya vidhipUrvakam ॥ papau divyaM jalaM tacca pItvA sukhamavApa ha ॥ 18 ॥
hk transliteration by Sanscript