When Lord Śrī Kṛṣṇa saw His mother, stick in hand, He very quickly got down from the top of the mortar and began to flee as if very much afraid. Although yogīs try to capture Him as Paramātmā by meditation, desiring to enter into the effulgence of the Lord with great austerities and penances, they fail to reach Him. But mother Yaśodā, thinking that same Personality of Godhead, Kṛṣṇa, to be her son, began following Kṛṣṇa to catch Him.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
तामात्तयष्टिं प्रसमीक्ष्य सत्वर- स्ततोऽवरुध्यापससार भीतवत् । गोप्यन्वधावन्न यमाप योगिनां क्षमं प्रवेष्टुं तपसेरितं मनः
tāmāttayaṣṭiṃ prasamīkṣya satvara- stato'varudhyāpasasāra bhītavat | gopyanvadhāvanna yamāpa yogināṃ kṣamaṃ praveṣṭuṃ tapaseritaṃ manaḥ
SB 10.9.9