Truly, those who believe (in the Oneness of Allah Islamic Monotheism, and in His Messenger Muhammad SAW) and do righteous good deeds, for them will be an endless reward that will never stop (i.e. Paradise)
But those who believe and fulfill the requisites of faith, there is an unending reward for them.
Al-muntakhab fi tafsir al-Qur'an al-Karim
But those who believed, with hearts impressed with the image of religious and spiritual virtues and with deeds of wisdom and piety, shall rejoice at the unceasing blissful reward