It is narrated from Sayyiduna Abu Hurairah, may Allah be pleased with him, that the Messenger of Allah, peace and blessings be upon him, said: "Whoever performs istinja (cleansing) with stones, let him use an odd number of stones, and whoever does so has done well, and whoever does not, there is no harm."
Under this chapter, the following sub-chapters and hadiths have been mentioned.
Hadith Referenceالفتح الربانی / كتاب الطهارة / 518