Remember those who have passed away with good deeds such as prayer or charity .

This hadith is about the consequences of lamenting for someone who has passed away. It was narrated from Anas that Umar bin al-Khattab said, when Hafsah lamented for him, "O Hafsah did you not hear the Messenger of Allah say, 'The one who is lamented for will be tormented?' And Suhaib lamented for him, and 'Umar said, 'O Suhaib do you not know that 'the one who is lamented for will be tormented?' This hadith teaches us that we should not express our sorrow in a loud manner when someone passes away as it can lead to punishment in the hereafter. We should instead remember them with good deeds such as praying or giving charity on their behalf.