Malbim Ayelet HaShachar Klal 269
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ויש פלוגתא בשם "קהל" אם נקרא בו גם שבט אחד או דוקא רוב ישראל. (ויקרא ס' רמח)
Ayelet Hashachar, translated by Betzalel Avraham Feinstein, 2021
And there is a disagreement regarding the noun קהל (assembly) as to whether even one tribe of Israel can be called a קהל or only the majority of Israel.