In a Hasan Hadith, the Prophet Muhammad, Peace and Blessings of Allah be upon him, his family and companions, said:
Truly, when one receives greater rewards, there shall come greater trials.
Truly, when Allah loves a people, [then know] He will test them, so whoever is pleased then for him is pleasure and satisfaction, and whoever is angry then for him is misery and wrath.
إِنَّ عِظَمَ الْجَزَاءِ مَعَ عِظَمِ الْبَلَاءِ وَإِنَّ اللَّهَ إِذَا أَحَبَّ قَوْمًا ابْتَلَاهُمْ فَمَنْ رَضِيَ فَلَهُ الرِّضَا وَمَنْ سَخِطَ فَلَهُ السَّخَطُ
~ Reference: Sunan al-Tirmidhi