Edward Rehatsek (1819-1898) was an Austrian orientalist. He translated Gulestan (rose garden) of Sa'di in the nineteen century. 

This is the story number 11 of chapter 5 titled: On love and youth 

Story 11

I asked one of the people of Baghdad what he

Thought of beardless youths. He replied: ‘There is no good in them for when one of them is yet delicate and wanted he is insolent; but when he becomes rough and  is not wanted he is affable.’

When a beardless youth is beautiful and sweet

His speech is bitter, his temper hasty.

When his beard grows and he attains puberty

He associates with men and seeks affection.