Quran 9:79

As for those who criticize the believers who voluntarily contribute more than they have to in charity, and those who cannot find much (due to their poverty), Allah will ridicule them... There is a painful suffering for them.Quran 9:79
The name of the surah, at-Taubah is derived from ت و ب and it occurs 87 times in the Quran. Interestingly, this surah has the highest usage of the words derived from ت و ب compared to all other surahs – it is used 17 times.
In Ayat 118, occurs the case of the three companions whom Allah turned to and accepted their tawbah to Him – those who had abstained from joining the Jihad at the Battle of Tabuk.
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ٱلَّذِینَ یَلۡمِزُونَ ٱلۡمُطَّوِّعِینَ مِنَ ٱلۡمُؤۡمِنِینَ فِی ٱلصَّدَقَـٰتِ
 وَٱلَّذِینَ لَا یَجِدُونَ إِلَّا جُهۡدَهُمۡ
 فَیَسۡخَرُونَ مِنۡهُمۡ سَخِرَ ٱللَّهُ مِنۡهُمۡ وَلَهُمۡ عَذَابٌ أَلِیمٌ
This is the only Sūrah of the Qur’ān to which ‘In the Name of God, Most Gracious Most Merciful’ is not prefixed. Though the commentators have given different reasons for this, the correct one that which has been given by Imām Razi: namely this is because the Prophet himself did not dictate it at the beginning of the Sūrah. Therefore the Companions did not prefix it and their successors followed them. This is a further proof of the fact that utmost care has been taken to keep the Qur’ān intact so that it should remain in its complete and original form.
جو (ذی استطاعت) مسلمان دل کھول کر خیرات کرتے ہیں اور جو (بےچارے غریب صرف اتنا ہی کما سکتے ہیں جتنی مزدوری کرتے (اور تھوڑی سی کمائی میں سے خرچ بھی کرتے) ہیں 
ان پر جو (منافق) طعن کرتے ہیں اور ہنستے ہیں۔ خدا ان پر ہنستا ہے اور ان کے لیے تکلیف دینے والا عذاب (تیار) ہے
The basic subjects of the Surah are: The non-believers who broke their treaties, Muslims have no obligation to honor treaties with them. Muslims must protect themselves from hypocrisy, weak faith and negligence. Battle of Tabuk and its lessons.
Sections:
Proclamation that the Treaty of Hudaibiyah is cancelled.
Honor the treaties with those who honor them. Fight with those who have broken the treaty.
Mushrikin are forbidden to be the caretakers of the Masjid al-Haram.
Muslims should trust Allah, not just their numbers.
Jews and Christians also committed Shirk. Command to spend in the path of Allah. The correct number of months.
The Tabuk expedition.
Those who stayed behind and did not participate in the Battle of Tabuk, hypocrites and weak in faith.
The proper distribution of charity. Those who speak ill of the Prophet or make fun of Allah and His Book.
The hypocrite men and women.

Quran 36:78~79

Yā Sīn (also Yaseen; Arabic: يٰسٓ, yāsīn; the letters ‘Yāʼ’ and ‘Sīn’) is the 36th chapter of the Quran (sūrah). It has 83 verses (āyāt).
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وَضَرَبَ لَنَا مَثَلًۭا وَنَسِىَ خَلْقَهُۥ ۖ 
قَالَ مَن يُحْىِ ٱلْعِظَمَ وَهِىَ رَمِيمٌۭ ‎
‏قُلْ يُحْيِيهَا ٱلَّذِىٓ أَنشَأَهَآ أَوَّلَ مَرَّةٍۢ ۖ 
وَهُوَ بِكُلِّ خَلْقٍ عَلِيمٌ ‎
‎
The surah focuses on establishing the Qur’an as a divine source, and it warns of the fate of those who mock God’s revelations and are stubborn. The surah tells of the punishments that plagued past generations of nonbelievers as a warning to present and future generations. Additionally, the surah reiterates God’s sovereignty as exemplified by His creations through signs from nature.
اور ہمارے بارے میں مثالیں بیان کرنے لگا اور اپنی پیدائش کو بھول گیا۔ 
کہنے لگا کہ (جب) ہڈیاں بوسیدہ ہوجائیں گی تو ان کو کون زندہ کرے گا؟ 
کہہ دو کہ ان کو وہ زندہ کرے گا جس نے ان کو پہلی بار پیدا کیا تھا۔ اور وہ سب قسم کا پیدا کرنا جانتا ہے
The Surah explains some of the basic beliefs of Islam, especially the belief in life after death and the Akhirah.
Sections:
The truth of the Qur’an and the truth of Prophet Muhammad (saw).
Allah’s messengers were sent to other people. The response of those to whom the prophets were sent and the result of their denial.
Allah’s signs in nature to remind about the day of Resurrection.
The scenes of the day of Resurrection.
Reminders about death and the Day of Judgment.