Sayyiduna Abdullah bin Salam (may Allah be pleased with him) said: When the Messenger of Allah (peace and blessings be upon him) was coming to Madinah, the people were waiting for him. When he arrived, the people came out to meet him. I was among them, and when I saw the blessed face of the Prophet (peace and blessings be upon him), I said to myself that this cannot be the face of a liar. The very first thing I heard from him was: "O people! Spread peace (i.e., greet each other with Salam), feed others, maintain ties of kinship, and pray at night when people are asleep; you will enter Paradise in peace."
Hadith Referenceسنن دارمي / من كتاب الاستئذان / 2668
Hadith Takhrijاس حدیث کی سند صحیح ہے۔ دیکھئے: [ترمذي 2485] ، [ابن ماجه 1334] ، [ابن سني فى عمل اليوم و الليلة 215] ، [شرح السنة 40/4] و [الحاكم 13/3] ، [أبويعلی 108/11، وغيرهم]