حَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا عَمْرُو بْنُ عُثْمَانَ، حَدَّثَنَا مُوسَى بْنُ أَعْيَنَ، حَدَّثَنَا مُحَمَّدُ بْنُ إِسْحَاقَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، وَسُئِلَ، عَنِ الْحِيطَانِ، تُلْقَى فِيهَا الْعَذِرَاتُ فَقَالَ " إِذَا سُقِيَتْ مِرَارًا فَصَلُّوا فِيهَا " . يَرْفَعُهُ إِلَى النَّبِيِّ ـ صلى الله عليه وسلم ـ .
It was narrated that Ibn 'Umar was asked about gardens in which excrement was thrown.: He said: "If it has been watered several times, then perform prayer there," and he attributed that to the Prophet.
Sunan Ibn Majah 744