Messenger of Allah ﷺ said, "Allah will say to the people of Paradise, 'O the people of Paradise!' They will say, 'Labbaik, O our Lord, and Saʿdaik!' Allah will say, 'Are you pleased?" They will say, 'Why should we not be pleased since You have given us what You have not given to anyone of Your creation?' Allah will say, 'I will give you something better than that.' They will reply, 'O our Lord! And what is better than that?' Allah will say, 'I will bestow My pleasure and contentment upon you so that I will never be angry with you after for-ever.' " (Using translation from Bukhārī 6549)
"إِنَّ الله تَعَالى يَقُولُ لأهْلِ الجنَّةِ: يأهْلَ الجنةِ، فَيَقُولون: لبيَّكَ رَبنا، وسَعْدَيكَ فَيَقُولُ: هَل رَضَيتُم؟ فَيقُولون: وما لنا لا نَرْضى وقد أعْطَيتنا مَا لمْ تُعْطِ
أحَدًا مِنْ خَلقِكَ؟ فَيقُولُ: ألا أعْطِيكُمْ أفْضَلَ مِنْ ذَلَكَ؟ فَيقُولون: يارَب وأى شيء أفْضَلُ من ذلك؟ فَيقولُ: أحِلُّ عَلَيكُمْ رِضْوَانى، فَلَا أسْخَطْ عَلَيكمْ بَعْدَهُ أبَدًا".