It is related that Ibn `Abbas radiyAllaahu `anh said:
“The Gardens have eight gates of gold inlaid with jewels:
Written on the first gate is Laa Ilaaha illallaah Muhammad ar-RasoolAllaah. It is the gate of the Prophets, Messengers, Martyrs, and the Generous.
The second gate is the gate of those who prayed, who were excellent in wudoo’ and the basic elements of the prayer.
The third gate is that of those who gave Zakat cheerfully.
The fourth gate is that of those who commanded good and forbade the reprehensible.
The fifth gate is the gate of those who rooted out their appetites and prevented passions.
The sixth gate is the gate of those who did Hajj and `Umrah.
The seventh gate is the gate of those who fought Jihaad.
The eighth gate is the gate of those who turned their eyes from haraam things and did good actions of respect to parents, relatives and others.
There are eight Gardens:
The first the Abode of Majesty, and it is of white pearl.
The second if the Abode of Peace, and it is of red ruby.
The third is the Abode of Shelter, and it is of green chrysolite.
The fourth is the Garden of Immortality, and it is of red and yellow coral.
The fifth is the Garden of Bliss, and it is of white silver.
The sixth is the Garden of Firdaws, and it is of red gold.
The seventh is the Garden of `Adn, and it is of white pearl.
The eighth is the Abode of Rest, and it is of red gold, and it is the dome of the Gardens, and it is raised over the Gardens. It has two gates, and the two leaves are of gold and silver. Between each of the two leaves is what is between the heaven and earth. It is built of gold and silver bricks. Its mud is musk and its earth is amber and its straw is saffron. Its castles are of pearl and its rooms are of ruby. Its doors are of jewels, and in it are rivers. There is the River of Mercy which flows in all the Gardens, and its pebbles are pearls, with a white brighter than snow, and it is sweeter than honey. In it is the River of Kawthar, and it is the river of our Prophet Muhammad sallallaahu `alayhi wasallam. Its trees are pearls and rubies. In it is the River of Kafur (Camphor), and the River of Tasnim, and the river of Salsabeel, and the River of ar-Raheeq al-Maktoom. Beyond that are rivers whose number is not known.”
– Daqa’iqul-akhbar fi Dhikril-Jannati wan-Naar by `Abd ar-Raheem ibn Ahmad al-Qadi, pp.125-6