यदा संहरते चायं कूर्मोऽङ्गानीव सर्वशः। इन्द्रियाणीन्द्रियार्थेभ्यस्तस्य प्रज्ञा प्रतिष्ठिता॥
yadā saṃharate cāyaṃ kūrmo'ṅgānīva sarvaśaḥ indriyāṇīndriyārthebhyastasya prajñā pratiṣṭhitā
Meaning
He who can withdraw his senses from the attraction of their objects, as the tortoise draws its limbs within its shell—take it that such a one has attained perfection.
English translation by Shri Purohit Swami (1935), public domain. Sanskrit text in the public domain. About Duvidha