والصلاة ثلاثة أثلاث: فثلث طهور، وثلث ركوع، وثلث سجود، ولا صلاة إلا بطهور، والوضوء مرة مرة، ومن توظأ مرتين فهو جائز إلا أنه لا يؤجر عليه، والماء كله طاهر حتى يعلم أنه قذر، ولا يفسد الماء إلا ما كانت له نفس سائلة، ولا بأس بالوضوء بماء الورد والاغتسال به من الجنابة، وأما الماء الذي تسخنه الشمس فلا بأس بالوضوء منه، وإنما يكره الوضوء به وغسل الثياب والاغتسال لانه يورث البرص، والماء إذا كان قدر كر لم ينجسه شئ، والكر ألف رطل ومائتا رطل بالعراقي، وروي أن الكر هو ما يكون ثلاثة أشبار طولا في ثلاثة أشبار عرضا في ثلاثة أشبار عمقا، وماء البئر طهور كله ما لم يقع فيه شئ ينجسه، وماء البحر طهور كله.
And the prayer is three thirds: a third is purification (tuhur), a third is ruku`, and a third is sujud. There is no prayer without tuhur. The wudu is done singly (i.e. the washings are done one time each), and someone who does wudu twice (washing twice), then it is permissible, however he is not rewarded for it. Water, all of it, is pure (tahir) until you know it is impure. Nothing ruins water but that which has a coursing self (i.e. running blood). There is no harm in [performing] wudu with rosewater and doing the ghusl al-janaba with it. As to water which the Sun has warmed, then there is no harm with [performing] wudu with it. It is only disliked [to perform] wudu with it and washing clothing and doing ghusl because it brings about vitiligo. Nothing makes water which is of the quantity of a kurr najis, and the kurr is one thousand two hundred rotl by [the measure of] the Iraqi rotl. It is narrated that the kurr is that which is three hand spans in length and three hand spans in width and three hand spans in depth. Well water is a purifier, all of it, so long as nothing falls into making it najis. Seawater is a purifier, all of it.