Hathayoga 1-10

अशेष-ताप-तप्तानां समाश्रय-मठो हठः ।

अशेष-योग-युक्तानामाधार-कमठो हठः ॥ १०॥

Aśeshatāpataptānām samāśrayamatho hathah aśeshayogayuktānāmādhārakamatho hathah

Like a house protecting one from the heat of the sun, Hatha Yoga protects its practiser from the burning heat of the three Tâpas; and, similarly, it is the supporting tortoise, as it were, for those who are constantly devoted to the practice of Yoga.