Hadithcore
Riyad as-Salihin, 848

'Abdullah bin Salam (May Allah be pleased with him) reported:

I heard the Messenger of Allah (ﷺ) saying, "O people, exchange greetings of peace (i.e., say: As-Salamu 'Alaikum to one another), feed people, strengthen the ties of kinship, and be in prayer when others are asleep, you will enter Jannah in peace." <b>[At- Tirmidhi, who classified it as Hasan Sahih]</b>.

وعن أبي يوسف عبد الله بن سلام رضي الله عنه قال‏:‏ سمعت رسول الله صلى الله عليه وسلم يقول‏:‏ ‏

‏يا أيها الناس أفشوا السلام، وأطعموا الطعام، وصلوا الأرحام وصلوا والناس نيام، تدخلوا الجنة بسلام‏

‏ ‏(‏‏(‏رواه الترمذي وقال حديث حسن صحيح‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Book 5, Hadith 5
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) Giving the greeting of peace among the believers is an effective means for creating love and cordiality.<br> 2) The key to entering Paradise is faith, the key to faith is love, and the key to love is the greeting of peace.<br> 3) It shows Allah’s mercy towards His servants, as He encourages them to enter Paradise through simple and easy deeds.