They went under every star . ذَهَبُوا تَحْتَ كُلِّ كَوْكَبِ‏.‏

(This proverb is used to describe a group of people who have scattered.)
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One of the closest English equivalents of this proverb, in terms of meaning of scattering and dispersing in every direction, is:
“Scattered to the four winds.”
Meaning: They scattered in all directions.
This is the most common and closest equivalent to the Arabic proverb
“They went their separate ways.”
Meaning: Each went his own way.
“Spread far and wide.”
Meaning: They spread everywhere.
“Dispersed in all directions.”
Meaning: They scattered in all directions.
And the closest to the spirit of the proverb is:
“They were scattered to the four winds.”
“They scattered in every direction.”
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يضرب للقوم إذا تفرقوا‏