The Prophet ﷺ noticed the absence of Thabit bin Qays, so a man said, "Messenger of Allah, I will find out about him for you."The man went to him and found him sitting in his house with his head lowered. He asked him, "What is the matter with you?"Thabit replied, "It is bad. He used to raise his voice above the voice of the Prophet ﷺ, so his deeds have been rendered worthless and he is among the people of the Fire."The man went back and informed the Prophet ﷺ that Thabit had said such and such.Musa bin Anas said, "He returned the second time with great glad tidings. The Prophet ﷺ said, 'Go to him and tell him, You are not among the people of the Fire, but among the people of Paradise.'"
أن النبي ﷺ افتقد ثابت بن قيس، فقال رجل: يا رسول الله، أنا أعلم لك علمه، فأتاه فوجده جالسا في بيته، منكسا رأسه، فقال: ما شأنك؟ فقال: شر، كان يرفع صوته فوق صوت النبي ﷺ فقد حبط عمله، وهو من أهل النار، فأتى الرجل فأخبره أنه قال كذا وكذا. فقال موسى بن أنس: فرجع المرة الآخرة ببشارة عظيمة، فقال: اذهب إليه، فقل له: إنك لست من أهل النار، ولكن من أهل الجنة.
Bukhari narrated it in the Book of Virtues (3613) and in the tafsir (4846), from Ali bin Abdullah, who said, Azhar bin Saad narrated to us, Ibn Awn informed us, he said, Musa bin Anas told me, from Anas bin Malik, and he related it.Muslim narrated it in the Book of Faith through another route, as will come later.