إِسْتَنْفَرَهُمْ

He (the Imám) incited, and summoned or invited them to go forth, لِجِهَادِ العَدُوِّ to war against the enemy: (T, Mgh:) or imposed upon them the task of going forth to war, light and heavy: [see Qur'an, 9:41:] (A:) or he demanded, sought, or desired, of them aid. (M, * K, TA.)

See also 2. in three places.

And see 1, in two places, near the beginning.