The Compendium of Caraka 6.3.119

6.3.119

sannipātajvaro ghoraḥ sa vijñeyaḥ suduḥsahaḥ/
sannipātajvarasyoktaṃ liṅgaṃ yattasya tat smṛtam//

is to be known as terrible, extremely unbearable fever of toxic combination. / What was stated as the sign of fever of toxic combination, that is traditionally recognized as its sign;