Text 8]
The Killing of the Demon Trṇāvarta
49
PURPORT
Śrīla Viśvanātha Cakravartī Thākura has commented on this verse as follows. When Lord Kṛṣṇa was of a very tender age, His hands and legs resembled soft new leaves, yet simply by touching the handcart with His legs, He made the cart fall to pieces. It was quite possible for Him to act in this way and yet not exert Himself very much. The Lord in His Vāmana  avatāra  had to extend His foot to the greatest height to penetrate the covering of the universe, and when the Lord killed the gigantic demon Hiraṇyakaśipu, He had to assume the special bodily feature of Nṛsiṁhadeva. But in His Kṛṣṇa  avatāra , the Lord did not need to exert such energy. Therefore,  kṛṣṇas tu bhagavān svayam : Kṛṣṇa is the Supreme Personality of Godhead Himself. In other incarnations, the Lord had to exert some energy according to the time and circumstances, but in this form He exhibited unlimited potency. Thus the handcart collapsed, its joints broken, and all the metal pots and utensils scattered.
The  Vaiṣṇava-toṣaṇī  remarks that although the handcart was higher than the child, the child could easily touch the wheel of the cart, and this was sufficient to send the demon down to the earth. The Lord simultaneously pushed the demon to the earth and superficially broke the handcart.
TEXT 8
दृष्ट्वा यशोदाप्रमुखा व्रजस्त्रिय
औत्थानिके कर्मणि याः समागताः ।
नन्दादयश्चाद्भुतदर्शनाकुलाः
कथं स्वयं वै शकटं विपर्यगात् ॥ ८ ॥
dṛṣṭvā yaśodā-pramukhā vraja-striya
autthānike karmaṇi yāḥ samāgatāḥ
nandādayaś cādbhuta-darśanākulāḥ
kathaṁ svayaṁ vai śakaṭaṁ viparyagāt
dṛṣṭvā —after seeing;  yaśodā-pramukhāḥ —headed by mother Yaśodā;  vraja-striyaḥ —all the ladies of Vraja;  autthānike karmaṇi —in the celebration of the  utthāna  ceremony;  yāḥ —those who;  samāgatāḥ —