لَا يَدْخُلُ الْجَنَّةَ قَتَّاتٌ
A severe warning against entering Paradise is given to one who secretly gathers and spreads people’s words to cause discord.
Source: البخاري ومسلم
قَتَّاتٌ describes someone who secretly listens to others and passes on what they say in a way that creates discord or resentment. The central wrong is violating privacy and spreading harm, not merely hearing information.
In لَا يَدْخُلُ, لَا is a negative particle and يَدْخُلُ a present-tense verb. الْجَنَّةَ is the object and قَتَّاتٌ the subject. The terse warning underscores gravity; it should not be used to decide the final fate of any named individual.