It is We Who have sent down the Qur'an to thee by stages. 23 So submit patiently to thy Lord's command, and obey not of them any guilty one or disbeliever. 24 and bear in mind thy Sustainer's name at morn and evening 25 and prostrate yourself before Him at night, and extol His Glory during the long watches of the night. 26 Verily those love the herein, and leave in front of them a heavy day. 27 We, even We, created them, and strengthened their frame. And when We will, We can replace them, bringing others like them in their stead. 28 This is indeed an advice; so whoever wishes may take the path towards his Lord. 29 Yet ye will not, unless Allah willeth. Lo! Allah is Knower, Wise. 30 He will admit to His Mercy whom He will; But the wrong-doers,- for them has He prepared a grievous Penalty. 31