In book by the great Imam Ghazzali: Ihya Uloom Ed-Din. Volume 4, Page-4.430;

“According to Prophet Muhammad (صلی اللہ علیہ وسلم) the Hurs (Houris) of Paradise will be pure women—free of menstruation, urine, stool, cough and children. The Hurs will sing in Paradise on divine purity and praise—we are most beautiful Hurs and we are for the honored husbands. Muhammad also said that an inmate of Paradise will have the sexual strength of 70 men. Muhammad said, “An inmate of Paradise will have 500 Hurs, 4,000 unmarried women and 8,000 widowed women. Each of them will keep embracing him for the duration of his whole worldly life.”

Volume 4, Page-4.428 of the same book: The Prophet Muhammad (صلی اللہ علیہ وسلم) said once to Jaber: “Shall I not give you the news of the windows of Paradise ? We said: 0 Messenger of God give us that information. He said: Those are made of emeralds and jewels. Their inner parts will be seen from their outer parts. Therein there will be such enjoyments, amusements and joys as no eye has seen, no ear has heard and no heart has conceived. I said: 0 Messenger of God, who will be the owners of those windows? He said: Those who spread peace, give food, keep fasts, pray at night when the people remain asleep. We asked: 0 Messenger of God, who will be able to do that? He said: My people will be able to do that. I am saying it to you. He who meets his brother, salutes him and replies to his salute,’ spreads peace; and he who gives food to his wife and members of his family to their satisfaction gives food. He, who keeps fast of Ramazan and three days every month, keeps fast as it were for the whole year. He who prays Isha and Fajr in congregation prays as it were the whole night when the people remain asleep. God says: The fine buildings in Eden Paradise.’ The Prophet said regarding its meanings: These places are builts of emeralds and jewels and in each building there will be 70 rooms of red colour and in each room 70 sub-rooms of green colour and in each sub-room there will be one throne and over each throne 70 beds of varied colours and on each bed a hoor al-ayn (houri- a girl having wide lovely eyes with intense black irises). There will be 70 dining cloth in each room and 70 kinds of food in each dining cloth. There will be seven girls in each room.Each believer will be given such strength in the morning as he can cohabit with them”.