The Excellence of the Remembrance of Allah Riyad as-Salihin 1437
Arabic hadith text
وعن جابر رضي الله عنه قال: سمعت رسول الله صلى الله عليه وسلم يقول: "أفضل الذكر: لا إله إلا الله". رواه الترمذي وقال حديث حسن.
Translation
Jabir (May Allah be pleased with him) reported
I heard the Messenger of Allah (ﷺ) saying, "The best way to celebrate the remembrance of Allah is to say: La ilaha illallah (there is no true god except Allah)."[At-Tirmidhi].