It is We Who have sent down the Qur'an to thee by stages. 23 Therefore wait patiently for the command of your Lord, and obey not from among them a sinner or an ungrateful one. 24 Mention the Name of your Lord, mornings and evenings. 25 And during the night prostrate to Him and exalt Him a long [part of the] night. 26 Lo! these love fleeting life, and put behind them (the remembrance of) a grievous day. 27 We created them, and We strengthened their joints, but, when We will, We shall indeed exchange their likes. 28 Verily this is an admonition; then whosoever will, may choose a way unto his Lord. 29 Yet you will not unless Allah wills; surely, Allah is the Knower, the Wise. 30 He admits into His mercy, whomever He wills; and for the unjust He has kept prepared a painful punishment. 31