The Compendium of Caraka 6.28.204

6.28.204

prāṇe vyānāvṛte tatra snehayuktaṃ virecanam/
prāṇāvṛte samāne syurjaḍagadgadamūkatāḥ//

occur when vyāna is obstructed by prāṇa; unctuous purgation is indicated there. / When samāna is obstructed by prāṇa, there would be dullness, stammering, and muteness;