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CC Ādi 13.91

a-kalaṅka gauracandra dilā daraśana
sa-kalaṅka candre āra kon prayojana
Synonyms: 
a-kalaṅka — without contamination; gauracandra — the moon of Lord Caitanya Mahāprabhu; dilā — gave; daraśana — audience; sa-kalaṅka — with contamination; candre — for a moon; āra — also; kon — what; prayojana — necessity.
Translation: 
When the spotless moon of Caitanya Mahāprabhu became visible, what would be the need for a moon full of black marks on its body?