"Salam was an Ahmadi Muslim, who saw his religion as a fundamental part of his scientific work. ... In 1974, the Pakistan parliament made the Second Amendment to the Constitution of Pakistan that declared Ahmadi to be non-Muslim. In protest, Salam left Pakistan for London." [0]
https://books.google.co.jp/books?id=d2tF-L00-X8C&pg=PA216&lp...
"My late friend, the distinguished Pakistani physicist Abdus Salam, tried to convince the rulers of the oil-rich states of the Persian Gulf to invest in scientific education and research, but he found that though they were enthusiastic about technology, they felt that pure science presented too great a challenge to faith. In 1981, the Muslim Brotherhood of Egypt called for an end to scientific education. In the areas of science I know best, though there are talented scientists of Muslim origin working productively in the West, for forty years I have not seen a single paper by a physicist or astronomer working in a Muslim country that was worth reading"
"The epitaph on his tomb initially read "First Muslim Nobel Laureate". The Pakistani government removed "Muslim" and left only his name on the headstone. They are the only nation to officially declare that Ahmadis are non-Muslim."