Fardh
These are the four parts of body to wash during Wudu: Verse: 5:6 يَا أَيُّهَا الَّذِينَ آمَنُوا إِذَا قُمْتُمْ إِلَى الصَّلَاةِ فَاغْسِلُوا وُجُوهَكُمْ وَأَيْدِيَكُمْ إِلَى الْمَرَافِقِ وَامْسَحُوا بِرُءُوسِكُمْ وَأَرْجُلَكُمْ إِلَى الْكَعْبَيْنِ Believers! [This very cleanliness is also needed to come in God’s presence. So,] when you rise to pray, wash your faces and your hands as far as the elbows, and wipe your heads and wash your feet to the ankles also. In ghusal, you have to wash the whole body.