Strain dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Ibn Seerin

Exerting efforts to one’s utmost, or to the point of straining oneself in a dream means the death of a sick person, or it could represent laboring hard to sustain one’s dependents.
Source: Islamic Dream Interpretation Author: Ibn Seerin

Interpretation 2 — Tyler Wolfe

To filter something in a dream is symbolic of worrying about minor details rather than what is important, Matt. 23:24
Source: Christian Dream Symbols Author: Tyler Wolfe