The Compendium of Caraka 8.7.37

8.7.37

tataḥ kramukakalkākṣaṃ pāyayetāmlasaṃyutam/
auṣṇyāttaikṣyāt saratvācca bastiṃ so 'asyānulomayet//

Then, one should make him drink an akṣa of areca nut paste combined with sour [liquids]; / through its heat, sharpness, and laxative property, it moves his enema downward.