قَالَ أَمِيرُ الْمُؤْمِنِينَ عَلِيٌّ ع- افْتِتَاحُ الصَّلَاةِ الْوُضُوءُ وَ تَحْرِيمُهَا التَّكْبِيرُ وَ تَحْلِيلُهَا التَّسْلِيمُ.
English translationBab Ul Qaim Publications
Hadith.68 - The Commander of the Faithful Imam Ali ibn Abi Talib (as), said: "The initiation of prayer is purification (ablution), its prohibition is the takbir (saying 'Allahu Akbar'), and its permissibility is the Tasleem (saying 'Assalamu Alaikum')."
Translation: Bab Ul Qaim Publications·Thaqalayn link·The Arabic above is the original.