Cakradatta (Cikitsasangraha) 74.5

74.5

vaktreṇaiva vameddhūmaṃ nasto vaktreṇa vā piban .
uraḥkaṇṭhagate doṣe vaktreṇa dhūmamāpibet .. 5 ..

One should emit the smoke only by the mouth, inhaling it either through the nose or by the mouth. / When the doṣa is situated in the chest and throat, one should inhale the smoke through the mouth; // 5