أَنْ تَكُونَ عَلَمًا فِي الْعُجْمَةِ
Translation: It must be a proper name in the foreign language.
The phrase فِي الْعُجْمَةِ is important: the book is not merely asking whether Arabic speakers use a borrowed word as a name, but whether its proper-name status comes from the foreign language.
Ibrāhīm is the positive case; lijām shows why a foreign common noun does not meet this condition.
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Diptote Causes — Foreign Origin and Its Conditions
أَنْ تَكُونَ عَلَمًا فِي الْعُجْمَةِ
Translation: It must be a proper name in the foreign language.
The phrase فِي الْعُجْمَةِ is important: the book is not merely asking whether Arabic speakers use a borrowed word as a name, but whether its proper-name status comes from the foreign language.
Ibrāhīm is the positive case; lijām shows why a foreign common noun does not meet this condition.