The Compendium of Bheḷa 4.4.29

4.4.29

kecidrakṣopahata ity āhuḥ, taccāyuktam | yadi hyevaṃ syād dṛśyeran puruṣaśarīre prahārādīni vā | tataśca[tastaccha] naivam | vetālābhibhūta[velāvabhūta] iti cetta cāpy anupapannam | puṇyāni hyeṣāṃmanāṃsi[vanāṃsi]dhyāyanti[dhyāyantye] | yadi caivaṃ kadācidbhavati | tasmāt tad eva pāṭhyaṃ rasopahatam iti cedevam eva | rasapravivekakāle tṛtīyakacaturthakāvapi[va] dṛśyete jvarāvapi |neṣatrāṃ hy ananārthaḥ? ||

Some say he is stricken by a demon, but that is incorrect. For if it were so, blows and the like would be seen on the man's body. And therefore it is not so. If one says he is possessed by a vetāla, that too is unproven. For their minds contemplate meritorious things. And if it ever happens thus, therefore that alone is to be recited: if one says he is stricken by chyle, it is just so. At the time of the distribution of chyle, tertian and quartan fevers are also seen. For is not this meaning well-settled?