‏البيوع : Hadeeth No:3632 Anas b. Malik (Allaah be pleased with him) reported: We were forbidden that a townsman should sell for a man of the desert, even if he is his brother or father....

‏الزهد والرقائق‏ : Hadeeth No:7082 'Umara b. al-Qa'qa' reported this hadith with the same chain of transmitters but instead of the word" qut" (bare subsistence) there has been used the word" Kafaf" (adequate means to meet the needs)....