शौचसन्तोषतपःस्वाध्यायेश्वरप्रणिधानानि

Patanjal Yoga-Sutra : 

sadhanapad -- 40-41-42-43-44-45

पातञ्जल योग-सूत्र :

साधनपाद -- ४०-४१-४२-४३-४४-४५

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[Refer to : 

शौचसन्तोषतपःस्वाध्यायेश्वरप्रणिधानानि नियमाः।।३२।।]

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शौचात् स्वाङ्गजुगुप्सा परैरसंसर्गः।।४०।।

(शौचात् स्व-अङ्ग-जुगुप्सा परैः असंसर्गः।।)

Observing the purification of the body and mind results in apathy towards one's body and aversion towards meeting the others.

सत्त्वशुद्धिसौमनस्यैकाग्र्येन्द्रियजयात्मदर्शनयोग्यत्वानि च।।४१।।

(सत्त्वशुद्धि-सौमनस्य-एकाग्र्य-इन्द्रियजय-आत्मदर्शन- योग्यत्वानि च।।)

When the mind has been properly purified, it becomes silent, peaceful and there prevails a sense of total wellness of being and light-ness. The attention becomes focused, one-pointed, and the senses of actions are well controlled. Attention turns inwards, towards one-self, and Self-Awareness is the result of  योग-अनुष्ठान / Yoga practice.

सन्तोषादनुत्तमः सुखलाभः।।४२।।

(सन्तोषात् अनुत्तमः सुखलाभः।।)

Then there is sense of satisfaction, fulfilment contentedness. When one accepts whatever life provides and feels grateful to Providence / the Life one feels within oneself immense, deep and uncaused bliss and happiness.

कायेन्द्रियसिद्धिरशुद्धिक्षयात्तपसः।।४३।।

(काया-इन्द्रियसिद्धिः अशुद्धिक्षयात् तपसः।।)

The impurities within the body and the mind are removed and they are purified by means of performing austerities / तपस् / tapas.

स्वाध्यायादिष्टदेवतासम्प्रयोगः।।४४।।

(स्वाध्यायात् इष्टदेवता सम्प्रयोगः।।)

स्वाध्याय / swAdhyAya : 

स्व अधि अय् -- implies enquiry into the स्व / swa -- the 'self' the आत्मन्  / Atman. This helps in discovering and associating with the देवता / devatA, the Divine within one's own being. 

समाधिसिद्धिरीश्वरप्रणिधानात्।।४५।।

(समाधिसिद्धिः ईश्वरप्रणिधानात्।।)

समाधि / samAdhi - entering into, and merging / absorption into the deeper recesses of the being is  समाधि / samAdhi. This is discovered when there is Ishvara-NishThA. When one has a firm understanding of the ईश्वर / Ishvara / the One Unique Supreme Conscious Reality that Controls the whole existence, the idea of oneself being an independent doer, enjoyer,  knower and the owner is no more. This is the result of ईश्वर निष्ठा / Ishvara-nishThA or the ईश्वर प्रणिधान / Ishvara praNidhAna.

योग-सूत्र ४०-४५ Aphorisms 40-45 indicate about what happens when the योग-अनुष्ठान / Practice of Yoga is correctly and properly done.

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