Majma al-Zawaid — Hadith 5625

Sayyiduna Fadalah bin Ubayd al-Ansari (may Allah be pleased with him) reports that the Prophet (peace and blessings be upon him) said during the Farewell Pilgrimage: "This is a sacred day and a sacred city. Your lives, your wealth and your honour are inviolable to you, just as this day (is inviolable), and so they will remain from this day until the day you appear before Him; even this is forbidden: that a Muslim should push another Muslim aside intending to harm him. I will tell you who a Muslim is: a Muslim is the one from whose tongue and hand people are safe. A believer is the one from whom people feel secure concerning their lives and their wealth. An emigrant (muhajir) is the one who abandons errors and sins. And a striver (mujahid) is the one who strives against himself to keep to the obedience of Allah Almighty." (Allamah al-Haythami says:) I say: Imam Ibn Majah recorded only this part of the narration: "A believer is the one from whom people are safe, and an emigrant is the one who abandons errors and sins."
Imam al-Bazzar and Imam al-Tabarani recorded it, the latter in al-Mu'jam al-Kabir in abridged form; the narrators of Imam al-Bazzar are thiqat (trustworthy).