There are 3 groups mentioned in chapter 56.
All translations are from FM, sometime with some changes.56:7 And you will be in three groupings.
56:8 Faashabu almaymanati ma ashabu almaymanati (So those on the right, who will be from those on the right)?
56:9 Waashabu almashamati ma ashabu almashamati And those on the left, who will be from those on the left?
56:10 Waalssabiqoona alssabiqoona (And those foremost, who will be from those foremost)?
56:11 They will be the ones who are brought near.
56:12 In gardens of bliss.
56:13 Many from the first generations.
56:14 And a few from the later generations.
Of Course the most interesting of those groups are called Al-Ssabiqoon.
Who are these people and how can we be one of them?
I believe the general rule to be one of them can found in:23:57 As for those who are, from the concern of their Lord, worried.
23:58 And they believe in the revelations of their Lord.
23:59 And they do not set up anything with their Lord.
23:60 And they give of what they were given, and their hearts are full of reverence that they will return to their Lord.
23:61 These are the ones who race in doing good, and they are sabiqoona.
Are there examples in The Quran?
Ofcourse there are a lot of examples.
RED: People of the left
GREEN: People of the right
BLUE: Al-Ssabiqoona 2:271 If you openly give charities, then it is acceptable; but if you conceal them and give them to the poor, then that is better for you. And He cancels some of your sins; and God is Expert to all that you do.
-- who are the people of the left?2:280 If the person is facing insolvency, then you shall wait until he becomes able. And if you relinquish it as a charity it is better for you if only you knew.
-- I wonder what people of the left do in such situation 4:86 And if you are greeted with a greeting, then return an even better greeting or return the same. God is Reckoning over all things.
-- looks like a small thing to do 2:249 So when Saul set out with the soldiers, he said: "God will test you with a river, whoever drinks from it is not with me, thus who ever therefore drinks there of he is not of me, and whosoever taste it not he is of me, save him who takes (thereof) in the hollow of his hand." They all drank from it, except for a few of them. So when he and those who believed with him crossed it, they said: "We have no power today against Goliath and his soldiers!" But the ones who understood that they would meet God said: "How many a time has a small group beaten a large group with the permission of God, and God is with the patient ones!"4:95 Not equal are those who stayed behind from the believers; except those disabled; with those who strived in the cause of God with their money and lives. God has preferred those who strive with their money and lives over those who stayed behind by a grade; and to both God has promised goodness; and God has preferred those who strived over those who stayed behind by a great reward.
-- it looks obvious to me who the people of the left are 2:237 And if you divorce them before having sexual intercourse with them, but you have already set the dowry for them; then you must give half of what you have agreed, unless they forgive or the guardian over the marriage contract forgives. And if you forgive, it is closer to righteousness. And do not forget the favor between you; God is Seer of what you do.
-- also looks obvious what people of the left do
2:184 A few number of days; however, if any of you is ill or traveling, then the same number from different days; and as for those who can do so but with difficulty, they may redeem by feeding the needy. And whoever does good voluntarily, then it is better for him (A). And if you fast it is better for you if only you knew (B).
-- actually there are double points to score here if you do the combo A AND B
Here is a last one to understand better inshaAllah:35:32 Then We inherited the Book to those whom We selected from Our servants. Subsequently, some of them wronged themselves, and some minimize, while others were sabiqun to work righteousness in accordance with the will of God; such is the great benefit.
Ofcourse this is my current personal understanding, I might be wrong.
There are more examples, if you have some verses I did not mention please share if you like.
And ofcourse any comment or correction is welcome
Salaam and may we be the ones who will be brought near, Al-Ssabiqoona