Hathayoga 1-44

तथैकास्मिन्नेव दृढे सिद्धे सिद्धासने सति ।
बन्ध-त्रयमनायासात्स्वयमेवोपजायते ॥ ४४॥

Tathaikāsminneva drdhe siddhe siddhāsane sati Bandhatrayamanāyāsātsvayamevopajāyate

Success in one Siddhâsana alone becoming firmly established, one gets Unmanî at once, and the three bonds (Bandhas) are accomplished of themselves.