It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that when the Prophet (peace and blessings be upon him) arrived in Madinah, he (peace and blessings be upon him) allotted plots of land for houses to the Companions, and Ibn Mas'ud was among those to whom he allotted. His (peace and blessings be upon him) Companions said: "O Messenger of Allah, keep him away from us." He (peace and blessings be upon him) said: "Then why did Allah send me? Indeed, Allah, the Mighty and Majestic, does not purify a nation that does not give the weak among them their due."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10488