Quran

The fact that they hastened to do wrong does not mean that We should hasten to punish them. Al-Saadi: 541.
Question: Is the indulgence of the wrongdoer and his sense of security an indication that he is doing the right thing? Explain.

Describing the provision as (generous) indicates its abundance and worry-free. Ibn Ashur: 17/294.
Question: What does describing the provision as (generous) in the verse indicate?

(A trial), an ordeal and tribulation. (Sick), doubt and hypocrisy. (Hardened), their hearts repudiate the truth, and they were the polytheists who were tried when they heard that. Al-Baghawi: 3/228.
Question: What types of hearts that are affected by the devil's whispers and become tried?

(So that He may make what satan casts a trial), for two groups of people about whom Allah does not care. They are (those whose hearts are sick), which is a weakness or lack of perfect faith and firm belief, hence, the slightest doubt that occurs to them may shake their faith. When they hear what satan throws in, they begin to doubt, and it becomes a test for them. (And those whose hearts are hardened), rigid, not influenced by rebukes or reminders, and they do not understand what Allah and His Messengers say because of their hardheartedness. Hence, what satan throws in becomes a trial of these two groups, thus, exposing what is in their hearts of concealed evil. As for the third group, it is a mercy in their case. They are the ones who are mentioned in this verse: (And so that those who were given knowledge may know that this [Quran] is the truth from your Lord), because Allah has blessed them with knowledge through which they recognize the truth as distinct from falsehood, and guidance as distinct from misguidance. Hence, they distinguish between the two matters. Al-Saadi: 542.
Question: When facing doubts, people become divided into three groups. What are they?

Allah divided the hearts into three types: Hardened hearts, sick hearts and believing humble hearts. Ibn Taimyah: 4/441.
Question: According to this verse, what are the types of hearts? And how do you classify your heart?

Whenever the truth is debated, its proofs become clear, and its arguments get lucid, as Allah says, (He causes many to go astray thereby and guides many thereby)[2:26]. (So they may believe in it), because they realize its truthfulness against the weakness of the raised doubts. (Their hearts become humbled), they find tranquility and submit to it, for Allah comforted their hearts. Al-Biqai: 13/73.
Question: The debate between people of truth and others is beneficial to all. Explain.

(A barren Day): The day of the Battle of Badr. It is described as barren day, because the disbelievers were killed and had no day or night afterward. Ibn Juzay: 2/62.
Question: Describing the day as barren implies a warning and a threat to the disbelievers. Explain.