Cakradatta (Cikitsasangraha) 5.171

5.171

tena pādāvaśeṣeṇa lauhapātre pacedbhiṣak .
tulārdhaṃ tīkṣṇalauhasya ghṛtasya kuḍavadvayam .. 171 ..

With that reduced to a fourth part, the physician should cook in an iron vessel / half a tulā of sharp iron [powder] and two kuḍavas of clarified butter. 171