Abu al-Zubayr relates that Sayyiduna Abdullah bin al-Zubayr (may Allah be pleased with him) used to recite these words after every prayer: 'La ilaha illallahu wahdahu la sharika lah, lahul-mulku wa lahul-hamdu wa huwa ala kulli shay'in qadir, la hawla wa la quwwata illa billah, la ilaha illallahu wa la na'budu illa iyyah, lahun-ni'matu wa lahul-fadlu wa lahuth-thana'ul-hasan, la ilaha illallahu mukhlisina lahud-dina wa law karihal-kafirun' (There is no god but Allah, alone, He has no partner; His is the dominion and His is the praise, and He has power over all things. The power to avoid sins and the strength to do good come only from Allah. There is no god but Allah, and we worship none but Him; His is the blessing, His is the bounty and His is the beautiful praise. There is no god but Allah; we make our worship sincerely for Him alone, even if the disbelievers dislike it).
(b) Then Ibn al-Zubayr (may Allah be pleased with him) said: "The Messenger of Allah (peace and blessings be upon him) also used to recite these words after every prayer."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3015