Suhayb reported,
The Prophet ﷺ said, "When the people of Paradise enter Paradise, Allah 
will say, 'Do you wish for anything more that I may grant you?'They will reply, 'Have You not whitened our faces? Have You not admitted us to Paradise and saved us from the Fire?'Then the veil will be lifted, and nothing they have been given will be more beloved to them than gazing upon their Lord 
."
Azami 13392
Sahihعن صهيب
عن النبي ﷺ قال: إذا دخل أهل الجنة الجنة، قال: يقول الله تبارك وتعالى: تريدون شيئا أزيدكم؟ فيقولون: ألم تبيض وجوهنا؟ ألم تدخلنا الجنة، وتنجنا من النار؟ قال: فيكشف الحجاب، فما أعطوا شيئا أحب إليهم من النظر إلى ربهم عز وجل.
Muslim narrated it in the Book of Faith (181), from Ubaydullah bin Umar bin Maysara, who said, Abdul-Rahman bin Mahdi told me, Hammad bin Salama narrated to us, from Thabit Bunani, from Abdul-Rahman bin Abu Layla, from Suhayb, and he related it.He also narrated it through the route of Yazid bin Harun, from Hammad bin Salama, with the same wording, adding, then he recited this verse, "For those who have done good is the best reward, and even more" [Yunus 10:26].Imam Ahmad narrated it (18935) from Yazid bin Harun, with the same wording, in full.