تَحْزَنُوا۟

Appears 3 times in the Quran. (Root: حزن)
  1. And be not infirm, and be not grieving, and you shall have the upper hand if you are believers.

  2. When you ran off precipitately and did not wait for any one, and the Messenger was calling you from your rear, so He gave you another sorrow instead of (your) sorrow, so that you might not grieve at what had escaped you, nor (at) what befell you; and Allah is aware of what you do.

  3. (As for) those who say: Our Lord is Allah, then continue in the right way, the angels descend upon them, saying: Fear not, nor be grieved, and receive good news of the garden which you were promised.