Q. initial voiceless nasals [hm], [hn] became voiced [m], [n]; [m̥-|n̥-] > [m-|n-]

Reference ✧ PE19/79

Phonetic Rule Elements

[m̥-] > [m-] ✧ PE19/079.1505 (hm > m; initially)
[n̥-] > [n-] ✧ PE19/079.1506 (hn > n; initially)