When mother Yaśodā and the other ladies who had assembled for the utthāna festival, and all the men, headed by Nanda Mahārāja, saw the wonderful situation, they began to wonder how the handcart had collapsed by itself. They began to wander here and there, trying to find the cause, but were unable to do so.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
दृष्ट्वा यशोदाप्रमुखा व्रजस्त्रिय औत्थानिके कर्मणि याः समागताः । नन्दादयश्चाद्भुतदर्शनाकुलाः कथं स्वयं वै शकटं विपर्यगात्
dṛṣṭvā yaśodāpramukhā vrajastriya autthānike karmaṇi yāḥ samāgatāḥ | nandādayaścādbhutadarśanākulāḥ kathaṃ svayaṃ vai śakaṭaṃ viparyagāt
SB 10.7.8