It is like the previous hadith. At its end Ibn Shihab (may Allah have mercy on him) said: The Ansar and the people estimated what the Messenger of Allah (peace and blessings be upon him) said, "Water, then hold back until the water returns to the walls," to be up to the ankles. Ibn Shihab also said: (It is) an ikhadh (a pool) in the Harrah that holds back water.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب إحياء الموات / 11856