That he heard Messenger of Allah ﷺ saying, "A slave of Allah may utter a word without thinking whether it is right or wrong, he may slip down in the Fire as far away a distance equal to that between the east."  

سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ إِنَّ الْعَبْدَ لَيَتَكَلَّمُ بِالْكَلِمَةِ مَا يَتَبَيَّنُ فِيهَا يَزِلُّ بِهَا فِي النَّارِ أَبْعَدَ مِمَّا بَيْنَ الْمَشْرِقِ  

The servant speaks words that he does not understand its repercussions but he sinks down in Hell-Fire farther than the distance between the east and the west.  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ إِنَّ الْعَبْدَ لَيَتَكَلَّمُ بِالْكَلِمَةِ مَا يَتَبَيَّنُ مَا فِيهَا يَهْوِي بِهَا فِي النَّارِ أَبْعَدَ مَا بَيْنَ الْمَشْرِقِ وَالْمَغْرِبِ  

The servant speaks words for which he is sent down to the Hell-Fire farther than the distance between the east and the west. (Using translation from Muslim 2988a)  

أَنَّهُ سَمِعَ رَسُولَ اللَّهِ ﷺ يَقُولُ «إِنَّ الْعَبْدَ لَيَتَكَلَّمُ بِالْكَلِمَةِ يَنْزِلُ بِهَا فِي النَّارِ أَبْعَدَ مَا بَيْنَ الْمَشْرِقِ وَالْمَغْرِبِ»  

The servant speaks words for which he is sent down to the Hell-Fire farther than the distance between the east and the west. (Using translation from Muslim 2988a)   

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «إِنَ الْعَبْدَ لَيَتَكَلَّمُ بِالْكَلِمَةِ مَا يَتَثَبَّتُ فِيهَا يَنْزِلُ بِهَا فِي النَّارِ أَبْعَدَ مَا بَيْنَ الْمَشْرِقِ وَالْمَغْرِبِ»  

That he heard Messenger of Allah ﷺ saying, "A slave of Allah may utter a word without thinking whether it is right or wrong, he may slip down in the Fire as far away a distance equal to that between the east." (Using translation from Bukhārī 6477)   

"إِنَّ الْعَبْدَ لَيَتَكَلَّمُ بالْكَلِمَةِ مَا يُتَبِّنُ فِيهَا، يَزلُّ بهَا في النَّار أَبْعَدَ مَا بَينَ الْمَشْرق، والْمَغْرب ".