Abu Saeed Khudri reported,
Abu Hurairah reported that the Prophet ﷺ said, "A caller will proclaim, 'You shall be healthy and never fall ill, you shall live and never die, you shall remain young and never grow old, and you shall enjoy bliss and never despair.' That is the meaning of His statement 
, 'And it will be called out to them, This is Paradise, which you have been made to inherit for what you used to do' [Araf 7:43]."
Azami 16425
Sahihعن أبي سعيد الخدري
وأبي هريرة، عن النبي ﷺ قال: ينادي مناد: إن لكم أن تصحوا فلا تسقموا أبدا، وإن لكم أن تحيوا فلا تموتوا أبدا، وإن لكم أن تشبوا فلا تهرموا أبدا، وإن لكم أن تنعموا فلا تيأسوا أبدا فذلك قوله عز وجل: {ونودوا أن تلكم الجنة أورثتموها بما كنتم تعملون} [الأعراف: ٤٣].
Muslim narrated it in the chapter on Paradise, its description, and its people (2837), through several routes from Abdul-Razzaq, who said, Thawri said, Abu Ishaq narrated to me, that Aghar narrated to him, from Abu Saeed Khudri and Abu Hurairah, who both mentioned it.