Anandakanda 1.6.54

1.6.54

rudratā hemajīrṇe syādīśatvaṃ vajrajārite /
sadāśivatvaṃ ca dadetpārado drutijāritaḥ //

the state of Rudra arises when it has digested gold; the state of Īśa when it has digested diamond; / and mercury digested with liquefied metal gives the state of Sadāśiva;