تا بہ مقدور
Ta Ba-Maqdoor
Means
To the extent of one's ability; as far as one's capacity allows; up to the limit of one's power.
تا بہ مقدور انتظار کیا دل نے اب زور بے قرار کیا
Ta ba-maqdoor intizaar kiya Dil ne ab zor-e-be-qaraar kiya