It means the garment's border or edge.
does the last third of the night start at 11:30 A.M.? What is meant by "the last part of the night"?
What time exactly does it start?
It is well known that night always varies in its length. Its third part can be recognized by dividing its time into three parts starting from sunset until dawn. Accordingly, the third part of the night means the last part of it.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.