Charak Samhita
प्रक्षिप्तोद्धृतमप्येनत् पुनस्तत् प्रक्षिपेद्रसे। कोष्णे सप्ताहमेतेन विधिना तस्य भावना ॥५१॥
Shilajatu is impregnated by dipping it in lukewarm decoction and then taking it out at the end of the day, repeating the process for a week.
english translation
prakSiptoddhRtamapyenat punastat prakSipedrase। koSNe saptAhametena vidhinA tasya bhAvanA ॥51॥
hk transliteration by Sanscript