Verse 62

भवद्भिरेव दुःखाय वासनावासिता मुधा ।बालैः पङ्कक्रीडनकं विनाशेनेव खिन्नता

In plain words

By your own selves vāsanā has been lodged within, in vain, for your own suffering - like the distress of children at the ruin of a mud-toy.