Za'ida bin Qadama al-Thaqifi زائدة بن قدامة الثقفي · Chapters on Supplication

“The Messenger of Allah (ﷺ) said to us: ‘Hold fast to At-Tasbih, At-Tahlil, and At-Taqdis, and count them upon the fingertips, for indeed they shall be questioned, and they will be made to speak. And do not become heedless, so that you forget about the Mercy (of Allah).’”