Night:
Between Maghrib and `Isha' recite a two rakaat prayer and in each unit recite Surah al-Fatihah once, Surah al-Tawhid once
Day:
Is recommended to observe fasting on `Arafah Day, and perform Ghusl before noon
Perform salaat of Dhuhr and Asr with one adhan only. It is better to perform these prayers under the open sky
After Asr, recite 2 raka'at under open sky. In the first unit after Sura al-Hamd, recite Sura al-Ikhlas and in the second unit after Sura al-Hamd recite Sura al-Kafirun. After the prayer, confess your past sins, and ask for forgiveness
Recite 4 raka'ats (2x2), in each unit after Sura al-Hamd recite Sura al-Ikhlas 50 times.
Recite the specific Ziarat of Imam Hussain for the day of Arafah, or Ziarat Waritha
Towards the end of the day:
Excerpt from 'Maqtal al-Husayn':
Ibn Ziyad then verbally abused him and abused ‘Ali (‘a), ‘Aqil, and al-Husayn (‘a), whereupon Muslim said, 'You and your father are more worthy of being thus abused; so, issue whatever decree you wish, you enemy of Allah!'
It was then that Ibn Ziyad ordered a Syrian to go to the top of the mansion and to behead Muslim and throw both the head and the body to the ground. The Syrian took Muslim to the flat rooftop of the mansion as the latter kept repeating,
'Subhan-Allah! La ilaha illa-Allah! Allahu Akbar!' He also kept repeating, 'O Allah! Judge between us and the people who deceived, betrayed and lied to us,' then he faced Medina and saluted al-Husayn (‘a).
The Syrian struck Muslim's neck with his sword and threw his head and body to the ground then hurried down. He was very startled. Ibn Ziyad asked him what was wrong with him. 'The moment I killed him,' said he, 'I saw a black man with an extremely ugly face standing beside me biting his finger, so I was frightened.' 'Perhaps you lost your mind for a moment,' said Ibn Ziyad.