4.20 एकसमये चोभयानवधारणम्

पतञ्जलिः

व्यासभाष्यम्

न चैकस्मिन्क्षणे स्वपररूपावधारणं युक्तम् । क्षणिकवादिनो यद्भवनं सैव क्रिया, तदेव च कारकमित्यभ्युपगमः ॥२०॥

सम्बद्धाः लेखाः

योगदर्शनम्

पतञ्जलिः

अष्टाङ्गयोगः

अन्ताराष्ट्रिययोगदिवसः

बाह्यसम्पर्कतन्तुः

• http://sanskritdocuments.org/doc_yoga/bhojavritti.html?lang=hi
• http://www.gitasupersite.iitk.ac.in/yogasutra_content?language=dv&field_chapter_value=1&field_nsutra_value=1&enable_sutra=1&enable_bhaysa=1&enable_vritti=1
• https://www.youtube.com/watch?v=uUmg-2Y6KcM

अधिकवाचनाय

पतञ्जलियोगसूत्रम्

योगसूत्राणि शृण्वन्तु

आङ्ग्लानुवादेन सह योगसूत्रम् Archived २०१६-०३-०४ at the Wayback Machine

स्वामिविवेकानन्दद्वारा लिखिता योगसूत्रस्य वृत्तिः Archived २०१४-०७-०७ at the Wayback Machine

• Yoga system of Patañjali (including commentaries Yoga-bhāshya by Vyasa and, Tattva-vāicāradī by Vāchaspati-Miçra), translated by James Haughton Woods, at books.google.com
• The Yoga Aphorisms of Patañjali (including commentary by Bhoja Raja), translated by Rajendralala Mitra, at books.google.com
• Patañjali - Yoga-Sutra: A word by word translation with gramma and comment Archived २०१२-०२-०२ at the Wayback Machine
• The Yoga Sutras of Patañjali, translation by BonGiovanni, at sacred-texts.com
• The Yoga Sutras of Patañjali: the Book of the Spiritual Man by Patañjali, an interpretation by Charles Johnston, at Project Gutenberg
• Yoga sutra and related yoga texts, at sanskritdocuments.org
• Audio lectures on Yoga Sutras, by Swami Harshananda, at archive.org
• Yoga Sutras Online Program by A. G. Mohan