The Compendium of Caraka 8.11.22

8.11.22

&prasthastvajāvyorhi nirūhamātrā gavādiṣu dvitriguṇaṃ yathābalam/
nirūhamuṣṭrasya tathā++āḍhakadvayaṃ gajasya vṛddhistvanuvāsane 'aṣṭamaḥ//

A prastha is indeed the dose of a non-unctuous enema for goats and sheep; for cattle and others, twice or thrice that, according to strength; / likewise, the non-unctuous enema for a camel is two āḍhakas; for an elephant, there is an increase; an unctuous enema is one-eighth [of that].