This code of Islamic hygienical jurisprudence is called Qaḍāʾ al-Ḥāǧa (Arabic: قضاء الحاجة).
[6] It is reported in the collection of hadith, Sahih al-Bukhari, that just before entering the toilet, Muhammad said: (Arabic: اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنَ الْخُبُثِ وَالْخَبَائِثِ, romanized: Allāhumma ʾinnī ʾaʿuḏu bika mina al-Ḫubuṯi wa-al-Ḫabāʾiṯi, lit.
[8] After defecating, the anus must be washed with water[citation needed] using the left hand, or an odd number of smooth stones or pebbles called jamrah or hijaarah (Sahih Al-Bukhari 161, Book 4, Hadith 27).
[10] Similarly, the penis or vulva should be washed with water using the left hand after urinating, a procedure called istinja.
When leaving the toilet, one is advised to exit with the right foot[5][failed verification] and say the Dua for leaving bathroom/toilet: "'الحمد لله الذي أذهب عني الأذى وعافاني'Alhamdu lillahil lazi azha-ba annill Aza Wa AA Fani.