Imam Dhahabi – rahimullaah – said:

If al-Fitan [trials & tribulations] occur then cling to the Sunnah, adhere to remaining silent and do not delve into that which does not concern you.

Whatever you find difficult to understand return it back to Allaah and His Messenger, and refrain yourself and say Allaah knows best.

Translator: Abbas Abu Yahya
Source: Siyar Aʿlām al-Nubalāʾ, vol. 20, p. 141. As quoted by Muhammad Bazmoul in twitter.com/momalbaz. 2 Apr 15.

Ibn al-Qayyim, may Allāh have mercy on him, said:

 …[T]he first of the levels of reverence and awe due to Al-Ḥaqq (the Ever True and Certain One)—great is His might and majesty—is holding His commands and prohibitions in the highest regard…so a believer’s treating Allāh the All-High’s commands and prohibitions with the utmost reverence is a sign of his treating the Giver of commands and prohibitions with reverence and awe….

Translator: Mikail ibn Mahboob Ariff
Source: ibn Qayyim al-Jawziyyah, Shams al-Dīn Muḥammad. Al-Wābil al-Ṣayyib min al-Kalim al-Ṭayyib. Damascus: Maktabah Dār al-Bayān, 1973, pp. 9-10.