It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) was asked: Will the people of Paradise visit one another? He (peace and blessings be upon him) said: "The one of higher rank will visit the one below, but the one below will not visit the one of higher rank, except those who loved one another for the sake of Allah, the Mighty and Majestic: they will go wherever they wish in Paradise on she-camels laden with cushions."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7925