The Compendium of Bheḷa 6.6.13

6.6.13

tāmraṃ śyāvaprakupitaṃ sajvaraṃ cāpi paittikam | samutpanneṣu vā teṣu stimitaṃ bahulaṃ guru ||

is coppery, dusky, enraged, and accompanied by fever, is caused by bile. / Or when they have arisen, that which is motionless, thick, heavy,