Indeed, Qarun was from the people of Moses, but he tyrannized them. (28:76)

Almuntakhab Fi Tafsir Alquran Alkarim

Qarun was a Hebrew of the people of Mussa (possibly a cousin), one who exercised iniquity and injustice toward his people. We made all grace abound in him. We bestowed on him such immense treasures that the keys (of the chambers where the treasures were hidden) would have been an immense burden for a host of strong men to carry (were a burden for three hundred mules). His people said to him: Do not rejoice boastingly, for Allah does not like those who boast` vaingloriously of what they are made to possess

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(28:76) The fact *94 is that Korah was of the people of Moses, but he rebelled against them; *95 and We had given him so many treasures that their very keys would have weighed down a band of strong men. *96 Once his people said to him, "Do not exult, for Allah does not like the exultant.

Indeed, Qarun was from the people of Moses, but he tyrannized them. meaning

*94) This fact also is being related in continuation of the answer to the excuse which has been the theme of the discourse from verse 57 onward. In this regard, one should bear in mind the fact that the people who feared that the Holy Prophet Muhammad's message would affect the overall national interests adversely were, in fact, the big money owners, money-lenders and capitalists of Makkah, who by virtue of their international trade and money-lending business had become the Korahs of their time. These were the people who thought that the real truth was to earn and amass maximum wealth. Anything that seemed to vitiate this object was an untruth which could not be accepted in any case. On the other hand, there were the common people who looked with longing eyes at these magnates and earnestly desired that they should also attain the same heights as those people had attained. In an atmosphere charged with the love of money, as it was, people considered it to be a weighty argument that if the invitation of the Holy Prophet Muhammad (upon whom be Allah's peace) towards Tauhid and the Hereafter and the moral code was accepted it would spell ruin for the Quraish not only commercially but economically too.
*95) Qarun who has been called Korah in the Bible and the Talmud was a first cousin of the Prophet Moses. According to the account of descent given in Exodus (ti: 18-21) the fathers of the Prophet Moses and Korah were real brothers. At another place in the Qur'an it has been stated that this man had joined with Pharaoh inspite of being an Israelite and become one of his favourites; so much so that one of the two ring-leaders of opposition to Prophet Moses after Pharaoh was this same Korah: "We sent Moses to Pharaoh and Haman and Korah with Our Signs and a clear authority of appointment, but they said, `He is a sorcerer, a liar'." (Al-Mu'min :23-24). From this it follows that Korah had rebelled against his own people and become a supporter of the hostile forces which were bent upon wiping out the Israelites. On account of this rebellion against his own people he had attained a high place with Pharaoh and the two persons, besides Pharaoh, to whom the Prophet Moses had been sent were Pharaoh's minister, Haman, and this Israelite capitalist, Korah. All other chiefs and couriers were of inferior status, who were not worth mentioning. The same position of Korah has been alluded to in Al' Ankabut: 39.
*96) In the story related of him in the Bible (Num., ch. 16), there is no mention of this man's wealth. But according to the Jewish traditions, he possessed immense wealth, so much so that three hundred mules were required to Barry the keys of his' treasures. (Jewish Encyclopedia, Vol. VII, p. 556). Though greatly exaggerated this statement shows that even according to the Israelite traditions, Korah was a very wealthy man of his time.
 

Indeed, Qarun was from the people of Moses, but he tyrannized them. meaning in Urdu

یہ ایک واقعہ ہے کہ قارون موسیٰؑ کی قوم کا ایک شخص تھا، پھر وہ اپنی قوم کے خلاف سرکش ہو گیا اور ہم نے اس کو اتنے خزانے دے رکھے تھے کہ ان کی کنجیاں طاقت ور آدمیوں کی ایک جماعت مشکل سے اُٹھا سکتی تھی ایک دفعہ جب اس کی قوم کے لوگوں نے اُس سے کہا "پھول نہ جا، اللہ پھولنے والوں کو پسند نہیں کرتا