अस्त्यवस्तुनि वस्त्वन्तः काञ्चनं सिकतास्विव ।अस्ति वस्तुन्यवस्त्वन्तर्मलं हेमकणेष्विव
In plain words
There exists within the unreal something real, as gold within the sands; there exists within the real something unreal, as dross within grains of gold.