احتجز بِهِ
1.
He, or it, was, or became, defended, or he defended himself, by it; synonym امْتَنَعَ. (TA.) [See also another explanation in what follows.]
2.
احتجزا
They two were, or became, separated, or parted, each from the other. (TA.) See also 6.
3.
احتجزهُ
He carried it in his
حُجْزَة: (A, K: *) like as اِحْتَضَنَهُ signifies “he carried it in his حِضْن” (A.)
4.
5.
Hence, احتجز بِالحِرَارِ
وَالجِبَالِ
It was encompassed by the stony tracts called
حرار [plural of حَرَّةٌ], and by the mountains. (Mgh.)