The Arabic word for third / one-third is ثُلُث (thuluth).. This word appears 5 times in the Quran.
225x⅓
ثُلُث
thuluth
third / one-third
ثُلُثَ اللَّيْلِ.
A third of the night.
Word 22 of 30
ثُلُث
thuluth
third / one-third
ثُلُثَ اللَّيْلِ.
A third of the night.