Surah Az-Zumar. A beautiful surah with so much information. Plus the thing is, it's very clear. Very.
(you can listen and follow with the interpretation and meaning there.)
I love reciting Surah al-Fajr. It showed how selfish and unthankful a human can be to his Lord. SubhanAllah, what an attachment we can have to this world...
As for man, when his Lord tries him by giving him honour and bounties, then he says (in): "My Lord has honoured me."
But when He tries him, by straitening his means of life, he says: "My Lord has humiliated me!"
Nay! But you treat not the orphans with kindness and generosity (i.e. you neither treat them well, nor give them their exact right of inheritance)!
And urge not one another on the feeding of AlMiskîn (the poor)!
And you devour inheritance all with greed,
And you love wealth with much love!
Nay! When the earth is ground to powder,
And your Lord comes with the angels in rows,
And Hell will be brought near that Day. On that Day will man remember, but how will that remembrance (then) avail him