“The life of this world is only the enjoyment of deception (a deceiving thing)” [Aal ‘Imraan 3:185]
“And the life of this world is nothing but play and amusement. But far better is the house in the Hereafter for those who are Al-Muttaqoon (the pious). Will you not then understand?” [al-An‘aam 6:32].
Al-Bukhaari (4913) and Muslim (1479) narrated that ‘Umar (may Allah be pleased with him) entered upon the Messenger of Allah (blessings and peace of Allah be upon him), and he had been sleeping on a reed mat that had left marks on his side, and beneath his head was a pillow of leather stuffed with palm fibres. ‘Umar said: I saw the marks left by the reed mat on his side, and I wept. He said: What is making you weep? I said: O Messenger of Allah, verily Chosroes and Caesar are living the lives they live, but you are the Messenger of Allah! He said: “Does it not please you that this world is for them and the Hereafter is for you?”
Source : Islamqa