The Messenger of Allah ﷺ said, "Worship the Most Merciful, spread the greeting of peace, and feed others, and you will enter the Gardens of Paradise."
قال رسول الله ﷺ: اعبدوا الرحمن، وأفشوا السلام، وأطعموا الطعام تدخلون الجنان.
Tirmidhi (1855) narrated it via Abu Ahwas, Ibn Majah (3694) via Muhammad bin Fudayl, Imam Ahmad (6587) via the two routes of Abu Awana and Abdul-Razzaq, Ibn Hibban in his Sahih (489, 507) via Jareer bin Abdul-Hameed, and Abd bin Humayd in al-Muntakhab (355) via Zaida bin Qudama, all of them from Ata bin Saaib, from his father, from Abdullah bin Amr, who related the hadith. Its chain of transmission is sahih. Ata bin Saaib is trustworthy, and the leading scholars affirmed his trustworthiness, except that his memory became confused toward the end of his life. However, Zaida bin Qudama's narration was transmitted from him before this confusion set in. Tirmidhi said, "This is a hasan sahih hadith."