Translation of the verse 22 from Surah Al-Mursalat : Number of verses 50 - - page 581 - Part 29.
For a known period (determined by gestation)?
For a known extent.
(77:22) until an appointed time? *12
*12) The words qadar im-malum do not only mean that the term is appointed and fixed but they also contain the sense that it is known to Allah alone. About no child can man know by any means how many months, days, hours, minutes and seconds it will remain in the mothers womb and what will be its exact and precise time of birth. AIlah alone has fixed a specific term for every child and He alone knows it.