Sukadev Bretz from Yoga Vidya in Bad Meinberg, Germany, recites the sixtieth verse, first chapter of the Hatha Yoga Pradipika written by Yogi Swatmarama:
सुस्निग्धमधुराहारश् चतुर्थांशविवर्जितः ।
भुज्यते शिवसम्प्रीत्यै मिताहारः स उच्यते ॥६०॥
The Hatha Yoga Pradipika is one of the most important classical scripture on the theory and practice of Hatha Yoga. For more information, including the sanskrit text in devanagari and roman script, please check out the Hatha Yoga Pradipika Page on Hatha Yoga Pradipika I 60.