38:81
إِلَىٰ يَوْمِ الْوَقْتِ الْمَعْلُومِ
Transliteration:
Ila yawmi alwaqti almaAAloomi
Word by Word:
Until (the) Day (of) the time well-known."
Translations:
till the Day the time whereof is known [only to Me]."
"Till the Day of the Time Appointed."
Until the day of the time appointed.
Till the day of the time made known.
Until the Day of the time well-known."