Narrated Anas bin Malik (RA): “Once Muadh was along with Allahs Apostle ﷺ as a companion rider. Allahs Apostle ﷺ said, “O Muadh bin Jabal.” Muadh replied, “Labbaik and Sadaik. O Allahs Apostle! ﷺ ” Again the Prophet ﷺ said, “O Muadh!” Muadh said thrice, “Labbaik and Sadaik, O Allahs Apostle! ﷺ ” Allahs Apostle ﷺ said, “There is none who testifies sincerely that none has the right to be worshipped but Allah and Muhammad is his Apostle, except that Allah will save him from the Hell-fire.” Muadh said, “O Allahs Apostle ﷺ ! Should I not inform the people about it so that they may have glad tidings?” He replied, “When the people hear about it, they will solely depend on it.” Then Muadh narrated the above-mentioned Hadith just before his death, being afraid of committing sin (by not telling the knowledge).
Sahih Bukhari صحیح بخاری
Hadith # 128
Narrated Anas (RA): I was informed that the Prophet ﷺ had said to Muadh, “Whosoever will meet Allah without associating anything in worship with Him will go to Paradise.” Muadh asked the Prophet, “Should I not inform the people of this good news?” The Prophet ﷺ replied, “No, I am afraid, lest they should depend upon it (absolutely).”
Sahih Bukhari صحیح بخاری
Hadith # 129