Muhammad - 47:31

وَلَنَبْلُوَنَّكُمْ حَتَّى نَعْلَمَ الْمُجَاهِدِينَ مِنكُمْ وَالصَّابِرِينَ وَنَبْلُوَ أَخْبَارَكُمْ
[47:31]
And most certainly We will try you until We have known those among you who exert themselves hard, and the patient, and made your case manifest.
And We shall try you until We test those among you who strive their utmost and persevere in patience; and We shall try your reported (mettle).
And verily We shall try you till We know those of you who strive hard (for the cause of Allah) and the steadfast, and till We test your record.