Hathayoga 1-69 1-70

न वेष-धारणं सिद्धेः कारणं न च तत्-कथा ।
क्रियैव कारणं सिद्धेः सत्यमेतन्न संशयः ॥ ६९॥

पीठानि कुम्भकाश्चित्रा दिव्यानि करणानि च ।
सर्वाण्यपि हठाभ्यासे राज-योग-फलावधि ॥ ७०॥

इति हठ-प्रदीपिकायां प्रथमोपदेशः ।

Na veshadhāranam siddheh kāranam na cha tatkathā Kriyaiva kāranam siddheh satyametanna samśayah

Pīthāni kumbhakāśchitrā divyāni karanāni cha Sarvānyapi hathābhyāse rājayogaphalāvadhi

Âsanas (postures), various Kumbhakas, and other divine means, all should be practised in the practice of Hatha Yoga, till the fruit—Râja Yoga—is obtained.

Hathayoga 1-68

क्रिया-युक्तस्य सिद्धिः स्यादक्रियस्य कथं भवेत् ।
न शास्त्र-पाठ-मात्रेण योग-सिद्धिः प्रजायते ॥ ६८॥

Kriyāyuktasya siddhih syādakriyasya katham bhavet Na śāstrapāthamātrena yogasiddhih prajāyate

Success cannot be attained by adopting a particular dress (Vesa). It cannot be gained by telling tales. Practice alone is the means to success. This is true, there is no doubt.

Hathayoga 1-67

युवो वृद्धोऽतिवृद्धो वा व्याधितो दुर्बलोऽपि वा ।
अभ्यासात्सिद्धिमाप्नोति सर्व-योगेष्वतन्द्रितः ॥ ६७॥

Yuvo vrddhoativrddho vā vyādhito durbaloapi vā Abhyāsātsiddhimāpnoti sarvayogheshvatandritah

Success comes to him who is engaged in the practice. How can one get success without practice; for by merely reading books on Yoga, one can never get success.

Hathayoga 1-66

पुष्टं सुमधुरं स्निग्धं गव्यं धातु-प्रपोषणम् ।
मनोभिलषितं योग्यं योगी भोजनमाचरेत् ॥ ६६॥

Pushtam sumadhuram snighdham Gavyam dhātupraposhanam Manobhilashitam yoghyam yogī bhojanamācharet

Whether young, old or too old, sick or lean, one who discards laziness gets success if he practises Yoga.

Hathayoga 1-65

गोधूम-शालि-यव-षाष्टिक-शोभनान्नं
क्षीराज्य-खण्ड-नवनीत-सिद्धा-मधूनि ।
शुण्ठी-पटोल-कफलादिक-पञ्च-शाकं
मुद्गादि-दिव्यमुदकं च यमीन्द्र-पथ्यम् ॥ ६५॥

Ghodhūmaśāliyavashāshtikaśobhanānnam Kshīrājyakhandanavanītasi hāmadhūni Śunthīpatolakaphalādikapañchaśākam Mudghādidivyamudakam cha yamīndrapathyam

A Yogî should eat tonics (things giving strength), well sweetened, greasy (made with ghee), milk, butter, etc., which may increase humors of the body, according to his desire.