ISTIQÂMAH – إستقامة
Literally: A being straight or upright. Straightness. Rectitude. Uprightness. Integrity.
As a Qur’anic term: Istiqâmah is being in the sphere of the commands of Allah (‘Azza wa jalla). That is, living inside the boundaries of the Sunnah as-Saniyyah and Sharî’ah. Being in the boundaries of as-sirât al-mustaqîm.
There is an istiqâmah for everything sourced from the Sunnah and the Sharî’ah. For example powers, belief, imagination, feelings like love, obstinacy, ambition and compassion etc… (Qur’an 11:112) (Qur’an 42:15) (Qur’an 6:151).
(Please refer to the Compilation on As-Sirât Al-Mustaqîm.)