Shaikh ibn al-Uthaimeen, may Allaah have mercy on him, said:

“The rectification of one’s inner self is by means of truthful sincerity to Allaah, the Mighty and Majestic, such that he doesn’t mind the creation [whether] their praise or criticism, their benefit or harm. His heart is with Allaah out of worship, deification, love, and honour of Him. His heart is also with Allaah with regards to His Decree and Ordainment; he knows that that which struck him couldn’t have missed him and what missed him couldn’t have been attained by him, and is pleased with what Allaah Decreed for him”. End. [Liqaa al-Baab al-Maftooh (11)]

Translated by

Zain Syed Irfan
Abu Abdil-Baari