The Jews used to greet the Prophet (ﷺ) by saying, "As-Samu 'Alaika (i.e., death be upon you), so I understood what they said, and I said to them, "As-Samu 'alaikum wal-la'na (i.e. Death and Allah's Curse be upon you)." The Prophet (ﷺ) said, "Be gentle and calm, O `Aisha, as Allah likes gentleness in all affairs." I said, "O Allah's Prophet! Didn't you hear what they said?" He said, "Didn't you hear me answering them back by saying, 'Alaikum (i.e., the same be upon you)?"
Sahih al-Bukhari Book 80, Hadith 90
← Previous Hadith The Prophet (ﷺ) sent a Sariya (an army detachment) consisting of men called Al-Qurra', and all of them were martyred. I had never seen the Prophet (ﷺ) so sad over anything as he was over them. So he said Qunut (invocation in the prayer) for one month in the Fajr prayer, invoking for Allah's wrath upon the tribe of 'Usaiya, and he used to say, "The people of 'Usaiya have disobeyed Allah and His Apostle."

Sahih al-Bukhari Book 80, Hadith 89 Next Hadith → We were in the company of the Prophet (ﷺ) on the day (of the battle) of Al-Khandaq (the Trench). The Prophet said, "May Allah fill their (the infidels') graves and houses with fire, as they have kept us so busy that we could not offer the middle prayer till the sun had set; and that prayer was the `Asr prayer."

Sahih al-Bukhari Book 80, Hadith 91