The Night of Decree is better than a thousand months. (97:3)

Almuntakhab Fi Tafsir Alquran Alkarim

Deeds imprinted with wisdom and piety (like supplication, benevolence, pondering, acquirement of knowledge, at that night) merit a reward outweighing the reward due for like deeds accomplished for one thousand months

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

(97:3) The Night of Power is better than a thousand months. *2

The Night of Decree is better than a thousand months. meaning

*2) The commentators in general have understood this to mean that the good acts performed in this Night are superior in value to the good acts of a thousand months in which Lailat-ul-qadr is not included. There is no doubt that this is in itself correct and the Holy Prophet (upon whom be peace) has described great excellencies and virtues of the good acts and devotions of this Night. According to a tradition related in Bukhari and Muslim, on the authority of Hadrat Abu Hurairah, the Holy Prophet said: The one who remained standing in worship in the state of belief and for the sake of rewards from Allah during Lailat-ul-qadr, would have all his previous sins forgiven." And in Musnad Ahmad, there is a tradition from Hadrat `Ubadah bin as-Samit, saying that the Holy Prophet said: Lailat-ut-qadr is. Among the last ten nights of Ramadan. The one who stood up in worship in order to take advantage of their rewards, Allah wilt forgive all his former and latter sins." But, the verse does not say: "To act righteously in Lailat-ul-qadr is better than acting righteously in a thousand months, " but it says: lailat-ul-qadr is better than a thousand months. " And "a thousand months" also does not imply 83 years and 4 months exactly, but a very long period of time as "a thousand" denoted among the Arabs. Therefore, the verse means that in this one night a task was accomplished for the welfare of mankind the like of which had not been accomplished even during an indefinitely long period of history.
 

The Night of Decree is better than a thousand months. meaning in Urdu

شب قدر ہزار مہینوں سے زیادہ بہتر ہے