Never did he (the Holy Prophet) say prayer after this in which I did not hear him seeking refuge from the torment of the grave.
Sahih Muslim Book 5, Hadith 160
← Previous Hadith There came to me two old women from the old Jewesses of Medina and said: The people of the grave are tormented in their graves. I contradicted them and I did not deem it proper to testify them. They went away and the Messenger of Allah (ﷺ) came to me and I said to him: Messenger of Allah I there came to me two old women from the old Jewesses of Medina and asserted that the people of the graves would be tormented therein. He (the Prophet) said: They told the truth; they would be tormented (so much) that the animals would listen to it. She ('A'isha) said: Never did I see him (the Holy Prophet) afterwards but seeking refuge from the torment of the grave in prayer.

Sahih Muslim Book 5, Hadith 159 Next Hadith → 1 heard the Messenger of Allah (ﷺ) seeking refuge from the trial of Dajjal (Antichrist) in prayer.

Sahih Muslim Book 5, Hadith 161