Allah’s Messenger (SAW) said, “Do you know the thing which most commonly brings people into Paradise? It is fear of Allah and good character. Do you know what most commonly brings people into Hell? It is the two hollow things: the mouth and the private parts” (Mishkat).
Sins of the tongue are dangerous and that is to the extent that it can lead us to Hell. When we fear Allah, we fear His wrath so beware of just talking and boasting for the sake of pleasure and not thinking about the consequences.
Narrated by Abu Hurayrah Ahmad: A man said, “Messenger of Allah (SAW), such and such a woman has a reputation for engaging to a great extent in prayer, fasting and almsgiving but she annoys her neighbors with her tongue.” He replied, “She will go to Hell.” He said, “Messenger of Allah (SAW), such and such a woman has a reputation for engaging to a small extent in fasting, almsgiving and prayer, but she gives pieces of curd as sadaqah and does not annoy her neighbors with her tongue.” He replied, “She will go to Paradise” (Mishkat).
Worship is not only praying and fasting but how we behave with others.
This hadith demonstrates that even a person who does the obligatory acts of worship but disregards the consideration of others does not mean they are a good Muslim.