Charak Samhita
कुर्यादादित्यपाकंवायावच्छुष्कोभवेद्रसः। लोहपात्रेततःपूतंसंशुद्धमुपयोजयेत्॥२७४॥
This medicated oil is given to a patient whose body is cleansed/ detoxified (by purgation therapy etc), in the form of inhalation therapy or massage over the head.
english translation
kuryAdAdityapAkaMvAyAvacchuSkobhavedrasaH। lohapAtretataHpUtaMsaMzuddhamupayojayet॥274॥
hk transliteration by Sanscript