Al-Kāfi
Hadith 11257- عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ رَفَعَهُ قَالَ حَرِيمُ النَّهَرِ حَافَتَاهُ وَمَا يَلِيهَا.
7. Ali ibn Ibrahim has narrated from his father in a marfu’ manner the following: “He (the Imam) (a.s.), has said, the restricted area around a canal is up to its edge and that which adjoins it.”