وَيُغْلَى الْمَاءُ بِالسِّدْرِ أَوْ بِالْحَرَضِ، فَإِنْ لَمْ يَكُنْ فَالْمَاءُ الْقَرَاحُ
Translation: Prepare water with sidr (lotus leaves) or a cleansing agent called harad; if unavailable, use plain water.
Sidr is lotus leaf used for cleansing; harad is another cleaning agent. Ma qarih means plain water. The cleansing agents assist cleaning, but plain water remains an available alternative.