यदा संहरते चायं कूर्मोऽङ्गानीव सर्वशः | इन्द्रियाणीन्द्रियार्थेभ्यस्तस्य प्रज्ञा प्रतिष्ठिता
yadā saṃharate cāyaṃ kūrmo.aṅgānīva sarvaśaḥ . indriyāṇīndriyārthebhyastasya prajñā pratiṣṭhitā
当一个人完全地将感官从感官对象中收回，如同乌龟将四肢完全缩回一样，那时，他的智慧便稳固了。
And when this one fully withdraws the senses from the objects of the senses, as a tortoise wholly (withdraws) the limbs, then his wisdom remains established.
感官的收回是制感（Pratyahara）或抽象。心意天生倾向于追逐外在对象。瑜伽士（Yogi）一次又一次地将心意从感官对象中收回，并将其固定在真我之上。一位具备制感（Pratyahara）能力的瑜伽士，即使在拥挤的地方，也能在眨眼之间收回感官，进入三摩地。他不受任何喧嚣和噪音的干扰。即使在战场上，他也能通过收回感官，安住于他的中心——真我。实践制感（Pratyahara）的人对世间而言是“死”的。他不会受到外界振动的影响。在任何时候，只要他愿意，他就能完全掌控自己的感官。它们是他的顺从仆人或工具。
Withdrawal of the senses is Pratyahara or abstraction. The mind has a natural,tendency to run towards external objects. The Yogi again and again withdraws the mind from the objects of the senses and fixes it on the Self. A Yogi who is endowed with the power of Pratyahara can enter into Samadhi even in a crowded place by withdrawing his senses within the twinkling of an eye. He is not disturbed by tumultuous sounds and noises of any description. Even on the battlefield he can rest in his centre? the Self? by withdrawing his senses. He who practises Pratyahara is dead to the world. He will not be affected by the outside vibrations. At any time by mere willing he can bring his senses under his perfect control. They are his obedient servants or instruments.