'Abdullah bin Salam (RAA) narrated that the Messenger of Allah (ﷺ) said:
"O people, extend greetings (saying Salam to each other), keep relations with your kin, provide food (to people) and pray at night when people are asleep and you will enter Paradise in peace." Related by At-Tirmidhi who graded it as Sahih. (DE)
English reference (DE): Book 16, Hadith 1574 (DE)
Arabic reference (DE): Book 16, Hadith 1531 (DE)