وَعَن عبد الله بن يسر
أَنَّ رَجُلًا قَالَ: يَا رَسُولَ اللَّهِ إِنَّ شَرَائِعَ الْإِسْلَامِ قَدْ كَثُرَتْ عَلَيَّ فَأَخْبِرْنِي بِشَيْءٍ أَتَشَبَّثُ بِهِ قَالَ: «لَا يَزَالُ لِسَانُكَ رَطْبًا بِذكر اللَّهِ)
Abdallah ibn Busr told of a man saying, “Messenger of God, the ordinances of Islam are too many for me, so tell me something to which I may cling.” He replied, “Your tongue will continue to be supple by making mention of God.” Tirmidhi and Ibn Majah transmitted it. Tirmidhi saying this is a hasan gharib tradition.
Mishkat al-Masabih 2180, Book 10, Supplications, Hadith 54. 1 min read