SHAFAQNA – Imam Ali (AS) said: The world is a house covered with calamities and well-known tricks, neither its conditions are stable, nor its people are healthy. It has various transformations and colourful periods; the life in it, is blameworthy, and the security in it, is dead. The people of the world are always targeted with arrows of calamity/misfortune, hitting them with its arrows, and destroy them with death. O’ the servants of God, you and others who live in this world are taking the same road as the departed ones!
Their lives were longer than you, their houses were better than you, and their relics/monuments were more than you; which suddenly their voices went silent, and the winds in their lands stopped blowing, and their bodies were decomposed, and their territories emptied and their relics disappeared! Lofty and strong palaces and the instruments of pleasure and soft pillows were transformed into stones, bricks, and attached graves . O’ people, avoid the Haram world which is cunning, deceitful, and tricky, a giver which takes back, and a wrapper which unwraps, its tranquillity is unstable, and its difficulties endless, and its calamities are for ever .
 Nahjul Balaghah, Sermon 226.
 As Above, Sermon 230.