Mountains may move from their position, but you should not…

Nahjul Balagha Part 1 The Sermons Sharif Razi
Delivered in the Battle of Jamal when Amir al-mu’minin gave thestandard to his son Muhammad ibn al-Hanafiyah1
Mountains2 may move from their position, but you should not move from yours. Grit your teeth. Lend to Allah your head (in fighting for Allah, give yourself to Allah). Plant your feet firmly on the ground. Have your eye on the remotest foe and close your eyes (to their numerical majority). And keep sure that succour is but from Allah, the Glorified.
Alternative Sources for Sermon 11
(1) Al-Mamatiri, Nuzhat al-‘absar, see ‘Abd al-Zahra’, I, 340;
(2) al-Zamakhshari, Rabi’, IV, bab al-qatl wa al-shahadah.