Islamic concepts

sāʾa — to trouble, hurt, make it hard

to distress, cause trouble, make things difficult, be evil, become burdensome :)

سَآءَ

O you who have believed, do not ask about things which, if they are shown to you, will distress you. But if you ask about them while the Qur'an is being revealed, they will be shown to you. Allah has pardoned that which is past; and Allah is Forgiving and Forbearing. A people asked such [questions] before you; then they became thereby disbelievers. 5:101-102

saʿá (سَعَىٰ) — labour, hard work, working diligently

On that Day there will also be faces radiant with bliss, well pleased with their labour, 88:9