The Surah derives its name from verse 71 and 73 in which the word zumar has occurred.
Period of Revelation
In verse 10 (wa ardullah-i-wasi atun : and Allah's earth is vast) there is abundant evidence that this Surah was sent down before the migration to Habash. Some traditions provide the explanation that this verse was sent down in respect of Hadrat Ja'far bin Abi Talib and his companions when they made up their mind to emigrate to Habash.(Ruh al-Maani, vol. XXII, p. 226).
Theme and Subject matter
The entire Surah is a most eloquent and effective address which was given some time before the emigration to Habash, in an environment filled with tyranny and persecution, ill-will and antagonism, at Makkah. It is a sermon whose addressees mainly are the unbelieving Quraish, although here and there the believers also have been addressed. In it the real aim of the invitation of Muhammad (upon whom be Allah's peace and blessings) had been enunciated, which is this:Man should adopt Allah