Enter it in peace. This is the Day of Eternity." (50:34)

Almuntakhab Fi Tafsir Alquran Alkarim

Such persons will be welcomed into the beatitude of heaven: Enter you people into My mercy, Allah says, and take up your abode in My Paradise with peace of mind, of soul and of conscience; peace be on you; this is the Day of timelessness and Eternity

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

(50:34) Enter this Paradise in peace.' *44 That will be the Day of Eternity.

Enter it in peace. This is the Day of Eternity." meaning

*44) If the word salam in udkhulu-ha bi-salam-in is taken in the meaning of peace and security, it would mean: "Enter this Paradise safe and secure from every kind of grief, sorrow, anxiety and affiliation"; and if it is taken in the meaning of salam itself, it would mean: "Enter this Paradise you are welcomed here with the greeting of peace by Allah and his angels." In these verses Allah has mentioned the qualities because of which a person makes himself worthy of Paradise, and they are: (1) Tagva (piety), (2) Turning towards Allah, (3) watching over and guarding one's relationship with AIIah, (4) fearing AIlah although one has not seen Him, and has full faith in His quality of mercy, and (5) coming into His Presence with a devoted and captivated heart, i.e. remaining constant on the way of devotion and dedication till death.
 

Enter it in peace. This is the Day of Eternity." meaning in Urdu

داخل ہو جاؤ جنت میں سلامتی کے ساتھ" وہ دن حیات ابدی کا دن ہوگا