Shiva Purana
सुवर्णमेव नांगारं द्रावयत्यग्निसंगमः ॥ एवं पक्वमलानेव मोचयेन्न शिवपरान् ॥ ५७ ॥
The combination of fire melts gold and coal Thus one should not release those who are devoted to Lord Śiva as if they were cooked and dirty.
english translation
suvarNameva nAMgAraM drAvayatyagnisaMgamaH ॥ evaM pakvamalAneva mocayenna zivaparAn ॥ 57 ॥
hk transliteration by Sanscript