Cakradatta (Cikitsasangraha) 65.157

65.157

vipāke kaṭu śītaṃ ca sarvaśreṣṭhaṃ tadāyasam .
gomūtragandhaḥ sarvepāṃ sarvakarmasu yaugikaḥ .. 156 ..

pungent and cold in post-digestive effect, is the best of all: that of iron. / The smell of cow's urine is common to all of them, and all are suitable for therapeutic actions. // 156