Sura 2 Al-Baqarah (The Cow), ayah 45

1. وَاسْتَعِينُوا بِالصَّبْرِ وَالصَّلَاةِ ۚ وَإِنَّهَا لَكَبِيرَةٌ إِلَّا عَلَى الْخَاشِعِينَ

   And seek help through patience and prayer, and indeed, it is difficult except for the humbly submissive (to Allah)

   2:45

Translation: Saheeh International