Kays 231:20 :ܠܗ̈ܓܐ ܡ݂ܫܚ̈ܢܝܐ ܐܝ݂ܬܝܗܘܢ ܗ݀ܠܝܢ܂ ܘܟܕ ܡ݁ܛܝܢ ܠܐܬܝ݂ܪ ܢܘ݂ܪܢܐ ܣ݁ܒܟ ܒܗܘ݁ܢ ܘܨ݁ܪܚ‏ : these are oily vapors so when they reach the aether a fiery nature adheres to them and it burns
See the entire entry for mešḥānāy adj. oily

Kays 231:20 :ܠܗ̈ܓܐ ܡ݂ܫܚ̈ܢܝܐ ܐܝ݂ܬܝܗܘܢ ܗ݀ܠܝܢ܂ ܘܟܕ ܡ݁ܛܝܢ ܠܐܬܝ݂ܪ ܢܘ݂ܪܢܐ ܣ݁ܒܟ ܒܗܘ݁ܢ ܘܨ݁ܪܚ‏ : these are oily vapors so when they reach the aether a fiery nature adheres to them and it burns
See the entire entry for ṣrḥ#2 vb. to be inflamed; shine