Via the BBC:
"There are too many of us," says Ulugbek, a young migrant from Uzbekistan. "We have to be grateful that there are mosques in Moscow. The city was not ready to host millions of us all of a sudden."
But others think that the authorities are ignoring the needs of the Muslim population.
Hasan Fakhritdinov, imam of what is known as the city's Historical Mosque, says that the existing facilities are just not enough.
"We are asking the authorities to let us build new mosques, but they are ignoring our demands," he says. "Now people have to pray outside in the rain or the snow."