How is Faiz Ahmed Faiz regarded in the literary world?

Faiz Ahmed Faiz:

He was born in Sialkot & stayed in Pakistan after partition.
He was a leftist in his political leanings.
He opposed the Pakistani regime, and his activism and outspoken views led to his imprisonment.
His poetry collections include Naksh-e-Fariyadi, Dast-e-Saba (a masterpiece in Urdu literature), and Zindan-Nama.
He was regarded as one of the greatest poets of South Asia in the twentieth century.