Explanation of the author's statement: And His saying, the Exalted: "And whoever believes in Allah, He will guide his heart" [Surat al-Taghabun: 11]. 'Alqamah said:

The Shaykh : He said: "And the saying of Allah, the Exalted:

And whoever believes in Allah - He will guide his heart

ومن يؤمن بالله يهد قلبه

[At-Taghabun 64:11]

" 'Man' is a conditional noun that necessitates the jussive, and the verb of the condition 'yu'min' is in the jussive, and 'yahdi' is the answer to the condition, in the jussive by what? By the deletion of the yā'... He did not say "He will guide it," he said "He will guide his heart," which indicates that this faith is connected to the heart. And it is known that if the heart is guided, the body is guided, by the saying of the Messenger (peace and blessings be upon him): . And the attribution of guidance to the heart is because by its guidance the body is guided, and because the heart is the one that deals with these matters.
'Alqamah said — who is 'Alqamah? He is from the great ones of the Tabi'un (may Allah have mercy on him) — he said: "It is the man who is struck by a calamity, and he knows that it is from Allah, so he is pleased and submits". So this interpretation by which he interpreted it is a necessary consequence of faith, because whoever believes in Allah knows that the decree is from where? From Allah, so he is pleased and submits. And everyone who believes in Allah as Lord is pleased with His decree and destiny, because he knows that He has absolute control over His servants, Blessed and Exalted is He. So if he believes in that, then Allah, the Exalted, will guide his heart and make him successful in more than what he believed in. And this is among the fruits of faith: when faith is realized, it increases the person's guidance; He guides his heart. And His saying: When you know that the calamity is from Allah, the heart becomes at ease and the heart relaxes, and no annoyance occurs to him. For this reason, one of the greatest sources of comfort and tranquility is belief in the divine decree and destiny, because the person finds rest, being a believer in Allah and a believer that the dominion is His and the command is His. So he relies upon Him, Blessed and Exalted is He, and there is no regret in his heart, because this is a matter that the All-Knowing, the Wise, the Expert has decreed.