Complex sentence: His youth was spent in Kufa, where he was engaged for some time in selling pottery.in the time of selling pottery, when he see the assembly of poems recite competition he participate it.Thus he become famous for his poetry.
Split into simpler sentences: His youth was spent in Kufa, where he was engaged for some time in selling pottery. In the time of selling pottery, when he see the assembly of poems recite competition he participate it.Thus he become famous for his poetry.