Ibn Zubayr used to say after every prayer, immediately following the salam, "There is no god but Allah alone, with no partner. To Him belongs the dominion and to Him belongs all praise, and He is capable of all things. There is no power and no strength except through Allah. There is no god but Allah, and we worship none but Him. To Him belong all blessings, to Him belongs all bounty, and to Him belongs the most excellent praise. There is no god but Allah, devoting our religion sincerely to Him, even if the disbelievers detest it."He said, "The Messenger of Allah ﷺ used to declare these words after every prayer."
كان ابن الزبير يقول في دبر كل صلاة حين يسلم: لا إله إلا الله وحده لا شريك له، له الملك وله الحمد، وهو على كل شيء قدير. لا حول ولا قوة إلا بالله، لا إله إلا الله، ولا نعبد إلا إياه، له النعمة وله الفضل وله الثناء الحسن. لا إله إلا الله مخلصين له الدين، ولو كره الكافرون. وقال: كان رسول الله ﷺ يهلل بهن دبر كل صلاة.
Muslim narrated it in "the Masjids" (594) from Muhammad bin Abdullah bin Numayr, who said, our father narrated to us, who said, Hisham narrated to us, from Abu Zubayr, and he mentioned something similar.He also narrated it through the route of Hajjaj bin Abu Uthman, who said, Abu Zubayr narrated to me, saying, I heard Abdullah bin Zubayr delivering a sermon on this pulpit, saying, the Messenger of Allah ﷺ used to say, when he finished the prayer, or the prayers, and he mentioned something similar.