Mushaf View — Surah 2 2:270

Allah states that He has perfect knowledge of the good deeds performed by all of His creation, such as charity and various vows, and He rewards tremendously for these deeds, provided they are performed seeking His Face and His promise. Allah also warns those who do not work in his obedience, but instead disobey His command, reject His revelation and worship others besides Him:
وَمَا لِلظَّـلِمِينَ مِنْ أَنصَارٍ
(And for the wrongdoers there are no helpers.) meaning, who will save them from Allah's anger and torment on the Day of Resurrection.
The Virtue of Disclosing or Concealing Charity
Allah said,
إِن تُبْدُواْ الصَّدَقَـتِ فَنِعِمَّا هِىَ
(If you disclose your Sadaqat, it is well) meaning, "It is well if you make known the charity that you give away."
Allah's statement,
وَإِن تُخْفُوهَا وَتُؤْتُوهَا الْفُقَرَآءَ فَهُوَ خَيْرٌ لَّكُمْ
(But if you conceal them and give them to the poor, that is better for you.) this indicates that concealing charity is better than disclosing it, because it protects one from showing off and boasting. However, if there is an apparent wisdom behind disclosing the charity, such as the people imitating this righteous act, then disclosing it becomes better than concealing it. The Messenger of Allah ﷺ said,
«الْجَاهِرُ بِالْقُرْآنِ كَالْجَاهِرِ بِالصَّدَقَةِ، وَالْمُسِرُّ بِالْقُرآنِ كَالْمُسِرِّ بِالصَّدَقَة»
(He who utters aloud Qur'anic recitation is just like he who discloses charity acts. He who conceals Qur'anic recitation is just like he who conceals charity acts.)
The Ayah indicates that it is better that acts of charity be concealed, as reiterated by the Hadith that the Two Sahihs recorded from Abu Hurayrah that the Messenger of Allah ﷺ said,
«سَبْعَةٌ يُظِلُّهُمُ اللهُ فِي ظِلِّهِ يَوْمَ لَا ظِلَّ إلَّا ظِلُّهُ: إِمَامٌ عَادِلٌ، وَشَابٌّ نَشَأَ فِي عِبَادَةِ اللهِ، وَرَجُلَانِ تَحَابَّا فِي اللهِ،اجْتَمَعَا عَلَيْهِ وَتَفَرَّقَا عَلَيْهِ، وَرَجُلٌ قَلْبُهُ مُعَلَّقٌ بِالْمَسْجِدِ، إِذَا خَرَجَ مِنْهُ حَتَّى يَرْجِعَ إِلَيْهِ، وَرَجُلٌ ذَكَرَ اللهَ خَالِيًا فَفَاضَتْ عَيْنَاهُ، وَرَجُلٌ دَعَتْهُ امْرَأَةٌ ذَاتُ مَنْصِبٍ وَجَمَالٍ، فَقَالَ: إِنِّي أَخَافُ اللهَ رَبَّ الْعَالَمِينَ، وَرَجُلٌ تَصَدَّقَ بِصَدَقَةٍ فَأَخْفَاهَا، حَتَّى لَا تَعْلَمَ شِمَالُهُ مَا تُنْفِقُ يَمِينُه»
(Allah will give shade to seven on the Day when there will be no shade but His. (They are:) a just ruler, a youth who has been brought up in the worship of Allah, two persons who love each other only for Allah's sake who meet and part in Allah's cause only, a man whose heart is attached to the Masjids from the time he departs the Masjid until he returns to it, a person who remembers Allah in seclusion and his eyes are then flooded with tears, a man who refuses the call of a charming woman of noble birth for illicit intercourse with her and says, `I fear Allah, Lord of the worlds', and a man who gives charitable gifts so secretly that his left hand does not know what his right hand has given.)
Allah's statement,
وَيُكَفِّرُ عَنكُم مِّن سَيِّئَاتِكُمْ
((Allah) will expiate you some of your sins) means, in return for giving away charity, especially if it was concealed. Therefore, you will gain goodness by your rank being raised, and your sins being forgiven.
Allah's statement,
وَاللَّهُ بِمَا تَعْمَلُونَ خَبِيرٌ
(And Allah is Well-Acquainted with what you do) means, "No good deed that you perform escapes His knowledge, and He shall reward for it."

(Whatever alms ye spend) for the sake of Allah (or vow ye vow) in obedience of Allah which you honour, (Lo! Allah knoweth it). Allah accepts it if it is solely for His Countenance as He also rewards for it. (Wrong-doers) those who ascribe partners to Allah (have no helpers) who can save them from Allah's torment.

And whatever expenditure you expend be it as alms or a voluntary almsgiving and whatever vow you make and fulfil surely God knows it and will requite you for it. For the evildoers who prevent almsgiving and vows or expend other than the way they should in disobedience to God they have no helpers to protect them from His chastisement.

(4) Verse 270: وَمَا أَنفَقْتُم مِّن نَّفَقَةٍ (الی قولہ) وَمَا لِلظَّالِمِينَ مِنْ أَنصَارٍ‌: "And whatever spending you do ... and for the unjust, there are no supporters."
Here, "and whatever spending you do" covers all spendings - those in which all related conditions are observed and those too, in which all or some conditions are not observed. For instance, it may not be in the way of Allah but be in the ways of sin; or the act of giving may be mixed up with hypocrisy; or may be followed by making a show of the favour before the receiver; or it may not be حلال halal (lawful) and good.
Similarly, all votive offerings (نذور : nudhur) come under the general purview of (nadhr نذر : singular: votive offering), for instance, it includes the nadhr نذر of monetary ` ibadah in accordance with which nadhr نذر has been introduced alongwith infaq (spending) and may also include nadhr نذر of physical ` ibadah. It may be absolute, or dependent on something else; or it may or may not have been fulfilled. The purpose of saying all this is that Allah Almighty knows all these things and He shall recompense for them duly. This was made known so that people are persuaded to observe limits and conditions and be warned of their non-observance. The word (al-zalimin الظَّالِمِينَ ) in the text refers to the unjust, the transgressors, who do not observe the necessary conditions. To them was given clear warning.

One who spends his money for the sake of God in the way that He has commanded him to do, proves that he has been blessed with wisdom. Wisdom here means knowledge and understanding of the Quran. The biggest folly is to be so enamoured of one’s wealth that one fails to spend for the cause of God, and the greatest wisdom lies in recognizing that monetary interests do not present any obstacle to one’s engaging oneself in God’s work. One should consider God’s cause as one’s own. One who lives within the cocoon of personal interests and considerations cannot possess the insight which would enable him to see higher realities and experience higher states of consciousness. On the contrary, one who goes ahead towards God by ignoring all personal considerations raises himself above all limitations. His consciousness reaches the divine level of God, who is independent (free from all wants), praiseworthy, all-sufficient, and wise. Man is thus enabled to see things as they are. For he goes beyond the limitations which serve as obstacles to seeing things in their true form. However true any argument may be, its truth dawns upon one only when one can see it with an open mind.