Kavyadarsha 2.176

2.176

madhupānakalāt kaṇṭhān nirgato 'py alināṃ dhvaniḥ &
kaṭur bhavati karṇasya kāmināṃ pāpam īdṛśam //

“Though issuing from a throat indistinct from drinking honey, the sound of bees / becomes harsh to the ear of passionate lovers; such is misdeed.”