Sunan Abu Dawud - سنن أبي داود
20. Tribute, Spoils, and Rulership (Kitab Al-Kharaj, Wal-Fai' Wal-Imarah) - كتاب الخراج والإمارة والفىء
36) Chapter: Allocation Of Land
Muhammad bin Al hasan Al Mukhzumi said “The sentence “that which is not reached by the Camel hoofs” means that the Camels eat (the arak trees) within the reach of their heads. So the land (where the arak trees are growing) may be protected beyond such a region.
36) باب فِي إِقْطَاعِ الأَرَضِينَ
حَدَّثَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، قَالَ قَالَ مُحَمَّدُ بْنُ الْحَسَنِ الْمَخْزُومِيُّ يَعْنِي أَنَّ الإِبِلَ تَأْكُلُ مُنْتَهَى رُءُوسِهَا وَيُحْمَى مَا فَوْقَهُ . " مَا لَمْ تَنَلْهُ أَخْفَافُ الإِبِلِ "
حكم: ضعيف جدا مقطوع (الألباني)