All geese (i.e. the Prophets) are alike. None of them is dirty or reprehensible. They make fragrant the reservoir where they pass a night.
Note: (1) There is no distinction between prophets. All are equally holy. They have left good memories in whatever region they lived and pursued their mission.
(The Prophet and the believers say:)” We make no distinction between any of His apostles.” (285, Al-baqarah).
(2) سَرُ is a Persian word. Its dictionary meaning is “rich land or middle of a valley”. In Sindhi language it generally means wild grass - Here it means the reservoir.

All swans are alike, none is dirty,
Where they pass night they make that fount fragrant.