"The Messenger has believed in what was revealed to him from his Lord," up to the end of the verse. Al-Hasan said: This is a supplication which Allah commanded His Messenger and the believers to make.
﴿آمَنَ الرَّسُولُ بِمَا أُنْزِلَ إِلَيْهِ من ربه﴾ الْآيَة قَالَ الْحسن: هَذَا دُعَاء أَمر الله رَسُوله وَالْمُؤمنِينَ أَن يدعوا بِهِ