The Compendium of Suśruta 6.58.26

Suśrutasaṃhitā 6.58.26

śuṣkaṃ bhavati yaccāpi śaṅkhacūrṇaprapāṇḍuram/
mūtraukasāhaṃ taṃ vidyādāmayaṃ †dvādaśaṃ kaphāt//