And let us not be weary in well doing: for in due season we shall reap, if we faint not.
το δε καλον ποιουντες μη εκκακωμεν καιρω γαρ ιδιω θερισομεν μη εκλυομενοι
Galatians 6:9
The same idea in other traditions
Wait on the LORD; Be strong, and let thy heart take courage; Yea, wait thou for the LORD.
As a solid rock is not shaken by the wind, wise people falter not amidst blame and praise.
The Master said, "When the year becomes cold, then we know how the pine and the cypress are the last to lose their leaves."
And if any accidents whatever befall him who has gained that (foundation), he will not be overpowered by them as a mountain by the storm.
O ye who believe! Persevere in patience and constancy; vie in such perseverance; strengthen each other; and fear Allah; that ye may prosper.
Let patience be your purpose in life; implant this within your being. In this way, you will grow into a great river; you will not break off into a tiny stream.
Your business is with action alone; not by any means with fruit. Let not the fruit of action be your motive (to action). Let not your attachment be (fixed) on inaction.