It is narrated from Sayyiduna Ibn Mas'ud (may Allah be pleased with him) that once the Prophet (peace and blessings of Allah be upon him) went out to relieve himself and said to me: "Bring me something with which I can clean myself, but do not bring anything with changed color water or dung." Then I also brought water for ablution for the Prophet (peace and blessings of Allah be upon him), and the Prophet (peace and blessings of Allah be upon him) performed ablution and stood up to pray. In this prayer, when the Prophet (peace and blessings of Allah be upon him) bent his back for bowing (ruku'), he clasped his hands together and placed his hands between his thighs.