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I.e., before the coming to them of "those who have forsaken the domain of evil" (see next note).
This relates, in the first instance, to the historical ansar ("helpers") of Medina, who had embraced Islam before the Prophet's and his Meccan followers' coming to them, and who received the refugees with utmost generosity, sharing with them like brethren their own dwellings and all their possessions. In a wider sense, the above refers also to all true believers, at all times, who live in freedom and security within the realm of Islam, and are prepared to receive with open arms anyone who is compelled to leave his homeland in order to be able to live in accordance with the dictates of his faith.
Thus, greed, niggardliness and covetousness are pointed out here as the main obstacles to man's attaining to a happy state in this world and in the hereafter (cf. surah {102}).
This refers to the Ansar (the Helpers), the people of Madinah who accepted Islam when it was persecuted in Makkah, and who invited the holy Prophet to join them and become their Leader in Madinah. The Hijrat was possible because of their goodwill and their generous hospitality. They entertained the Prophet and all the refugees (Muhajirs) who came with him. The most remarkable ties of full brotherhood were established between individual members of the one group and the other. Until the Ummat got its own resources, the Helpers regularly gave and the Refugees regularly received. The Helpers counted it a privilege to entertain the Refugees, and even the poor vied with the rich in their spirit of self-sacrifice. When the confiscated land and property of the Banu Nadhir was divided, and the major portion was assigned to the refugees, there was not the least jealousy on the part of the Helpers. They rejoiced in the good fortune of their brethren. And incidentally they were themselves relieved of anxiety and responsibility on their behalf.