šḥn - to warm, be warmed; (pa.) to warm, heat
(LSyr. 769, SL 1544)
Syriac
šḥāpā - first milk after calving
(LSyr. 770, SL 1545)
Would be acceptable as a cognate for Proto-MSA *ŝVḫāp- ‘milk’, but it is very sparsely attested and displays š instead of the expected *s, so that its similarity to the MSA forms may be purely accidental