Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
quran:50:34 –

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

It will also be said to the God-fearing: ‘Enter it in peace!, that is to say, secure from every fear, or ˹it means enter it˺ with a greeting, that is to say, greet ˹yourselves˺ and enter. That, day in which this entry takes place, is the day of immortality’, ˹of˺ everlastingness in Paradise.
القرآن:٥٠:٣٤ –

ادْخُلُوهَا بِسَلَامٍ ۖ ذَٰلِكَ يَوْمُ الْخُلُودِ  

{ادخلوها بسلام} سالمين من كل مخوف أو مع سلام، أي سلموا وادخلوا {ذلك} اليوم الذي حصل فيه الدخول {يومُ الخلود} الدوام في الجنة.