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

Delivered in the Battle of Jamal when Amir al-Mu’minin gave thestandard to his son Muhammad ibn al-Hanafiyah1 Mountains2may 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.

ومن كلام له (عليه السلام) لابنه محمّد بن الحنفية لمّا أعطاه الراية يوم الجمل تَزُولُ الجِبَالُ وَلاَ تَزُلْ! عَضَّ عَلَى نَاجِذِكَ، أَعِرِ اللهَ جُمجُمَتَكَ، تِدْ في الاْرْضِ قَدَمَكَ، ارْمِ بِبَصَرِكَ أَقْصَى القَوْمِ، وَغُضَّ بَصَرَكَ، وَاعْلَمْ أَنَّ النَّصْرَ مِنْ عِنْدِ اللهِ سُبْحَانَهُ.