Moulavi Gerágh Ali

“ It means, as used by the classical poets as well as by the Koran, to do one's utmost; to labour; to toil; to exert one's-self or his power, efforts, endeavours, or ability; to employ one's-self vigorously, diligently, studiously, sedulously, earnestly, or with energy; to be diligent or studious, to take pains or extraordinary pains. Vide Appendix A.
In the second place, Yezid bin Abi Shaiba, a link in the chain of the tradition, is a "Mujhool", [1] i.e., his biography is not known, therefore his tradition can have no authority. ”