balam āyur yaśaḥ kāntiṁ
We can see a clear difference between Lord Kṛṣṇa’s dealings with the nasty washerman and His dealings with the devoted florist Sudāmā. The Lord is as hard as a thunderbolt for those who defy Him and as soft as a rose for those who surrender to Him. Therefore we should all sincerely surrender to Lord Kṛṣṇa, since that is clearly in our self-interest.
Thus end the purports of the humble servants of His Divine Grace A.C. Bhaktivedanta Swami Prabhupāda to the Tenth Canto, Forty-first Chapter, of the Śrīmad-Bhāgavatam, entitled “Kṛṣṇa and Balarāma Enter Mathurā.”