Speak truthfully even when it may seem difficult or uncomfortable.

This hadith speaks about the importance of truthfulness and honesty in one's words. It warns against claiming to be the son of someone who is not one's biological father, as this would be considered a lie and would lead to being denied entry into Paradise. This hadith emphasizes that it is important for people to speak truthfully, even when it may seem difficult or uncomfortable. Furthermore, it teaches us that we should always strive for honesty in our words and actions, as this will bring us closer to Allah and help us gain His favor.