a doer of good by performing the righteous deeds that have been commanded. These two fundamentals comprise the whole of the religion: that we worship none but Allah, and that we worship Him only by what He has legislated, not by innovations.
Allah the Exalted says:
“So whoever hopes to meet his Lord, let him do righteous deeds and never associate anyone in the worship of his Lord.” (al-Kahf 18:110)
ʿUmar ibn al-Khaṭṭāb—may Allah be pleased with him—used to pray:
“O Allah, make all of my deeds righteous, make them purely for Your Face, and do not allow anyone else to have a share in them.”
Al-Fuḍayl ibn ʿIyāḍ, commenting on the verse,
“that He may test you to see which of you is best in deeds” (al-Mulk 67:2),
said, “the most sincere and the most correct.”
They asked him, “Abū ʿAlī, what is meant by ‘most sincere and most correct’?” He replied, “If a deed is sincere but not correct, it will not be accepted; and if it is correct but not sincere, it will not be accepted—until it is both sincere and correct. Sincerity means that it is for Allah alone, and correctness means that it conforms to the Sunnah.”
These two principles constitute the realization of the two testimonies that stand at the very head of Islam: the testimony