The Arabic word for when / as soon as is لَمَّا (lammaa).. This word appears 53 times in the Quran.
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لَمَّا
lammaa
when / as soon as
لَمَّا سَمِعُوهُ.
When they heard it.
Word 38 of 40
لَمَّا
lammaa
when / as soon as
لَمَّا سَمِعُوهُ.
When they heard it.