Abdullah bin Zubayr used to recite the declaration of Allah's oneness after the prayer, saying, "There is no god but Allah alone, with no partner. To Him belongs the dominion, to Him belongs all praise, and He has power over all things. There is no god but Allah, and we worship none but Him. To Him belongs every blessing, to Him belongs every favor, and to Him belongs the most beautiful praise. There is no god but Allah, devoting our worship sincerely to Him, however much the disbelievers may detest it."Then Ibn Zubayr said, "The Messenger of Allah ﷺ used to recite these words after every prayer."
أخبرنا إسحق بن إبراهيم قال حدثنا عبدة قال حدثنا هشام بن عروة
كان عبد الله بن الزبير يهلل في دبر الصلاة يقول لا إله إلا الله وحده لا شريك له له الملك وله الحمد وهو على كل شيء قدير 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 ثم يقول ابن الزبير كان رسول الله ﷺ يهلل بهن في دبر الصلاة