Abu Sa'eed Al-Khudri narrated that the Messenger of Allah (s.a.w) said:
"Indeed, Allah will say to the people of Paradise: 'O people of Paradise!' They will say: 'We respond to You, O our Lord,and we are at Your service.' Then He will say: 'Are you pleased?' They will say: 'Why should we not be pleased when You have given us what you have not given anyone from Your creation.' So He will say: 'I shall give you what is greater than that.' They will say: 'And what is greater than that?' He will say: 'I shall cover you in My Pleasure and I shall not become angry with you ever."
English reference: Vol. 4, Book 12, Hadith 2555
Arabic reference: Book 38, Hadith 2753