Majma al-Zawaid — Hadith 4729

Kudayr al-Dabbi narrates: A Bedouin came to the Prophet (peace and blessings be upon him) and said: "Tell me of a deed that will bring me near to Paradise and keep me far from Hell." The Prophet (peace and blessings be upon him) said: "Should that (deed) do both of these things?" He said: "Yes." The Prophet (peace and blessings be upon him) said: "Speak justly, and give what is surplus." He said: "By Allah, I am not able to speak justly at all times, nor am I able to give what is surplus at all times." The Prophet (peace and blessings be upon him) said: "Feed people and spread the greeting of salam." He said: "This too is difficult." The Prophet (peace and blessings be upon him) asked: "Do you have camels?" He said: "Yes." The Prophet (peace and blessings be upon him) said: "Then take one of your camels and a waterskin, then go to a household that gets water only at intervals, and provide them with water. It may be that Paradise becomes obligatory for you before your camel dies and before your waterskin tears." The Bedouin went off saying the takbir, and before his waterskin tore and before his camel died, he was killed as a martyr.
Al-Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators are the narrators of the Sahih.