There is a verse in Surah Al-Ma'arij which says that the day with your Lord will be equal to fifty thousand years كَانَ مِقْدَارُ‌هُ خَمْسِينَ أَلْفَ سَنَةٍ. Tirmidhi has classified this hadith as 'hasan'. those who migrated from Makkah) and said, ` I give you good news about the full refulgence on the Day of Resurrection and that you will be admitted to heaven half a day before the rich and the wealthy, and a day in the Hereafter will be of one thousand years, hence the poor will enter the heaven five hundred years before the wealthy'. This view is supported by a saying of the Holy Prophet ﷺ as reported in Musnad of Ahmad and Tirmidhi on the authority of Sayyidna Abu Hurairah ؓ that the Holy Prophet ﷺ once addressed the poor people of the muhajirin (i.e. The other meaning of the verse is that the Day of Resurrection will in actual fact be so long that it will stretch up to one thousand years of this world. Many commentators have interpreted this verse accordingly. The first meaning is that the verse refers to the Day of Resurrection and the events which will take place on that day will be so horrifying and of such extreme severity that the day will appear never to end, as if it was equal to one thousand years according to our reckoning.

This verse can be interpreted in two ways. How the Day of Resurrection will be equal to one thousand years by our reckoning

A day is like a thousand years