26:194Ash-Shu'araa

When this verse was revealed:" And warn thy nearest kindred," the Messenger of Allah (ﷺ) set off towards a rock of the hill and ascended the highest of the rocks and then called: 0 sons of 'Abd Manaf! I am a warner; my similitude and your similitude is like a man who saw the enemy and went to guard his people, but, being afraid they might get there before him, he shouted: Be on your guard!

" And warn thy nearest kindred" (and thy group of selected people among them) the Messenger of Allah (ﷺ) set off till he climbed Safa' and called loudly: Be on your guard! They said: Who is it calling aloud? They said: Muhammad. They gathered round him, and he said: O sons of so and so, O sons of so and so, O sons of 'Abd Manaf, O sons of 'Abd al-Muttalib, and they gathered around him. He (the Apostle) said: If I were to inform you that there were horsemen emerging out of the foot of this mountain, would you believe me? They said: We have not experienced any lie from you. He said: Well, I am a warner to you before a severe torment. He (the narrator) said that Abu Lahab then said: Destruction to you! Is it for this you have gathered us? He (the Holy Prophet) then stood up, and this verse was revealed:" Perish the hands of Abu Lahab, and he indeed perished" (cxi. 1). A'mash recited this to the end of the Sura.

"The Messenger of Allah (s.a.w) would often say: Ya Muqallibal-qulub, thabbit qalbi 'ala dinik('O Changer of the Hearts! Strengthen my heart upon Your Religion.)' So I said: 'O Prophet of Allah! We believe in you and what you have come with, but do you fear for us?' He said: 'Yes. Indeed the hearts are between two Fingers of Allah's Fingers, He changes them as He wills.'"

"The Messenger of Allah (saas) often used to say: 'Allahumma thabbit qalbi 'ala dinika .' A man said: 'O Messenger of Allah! Do you fear for us when we have believed in you and in (the Message) that you have brought?' He said: 'Hearts are between two of the fingers of the Most Merciful, and He controls them.'" (Hasan)Al-A'mash (one of the narrators) indicated with his fingers.

that the Messenger of Allah (ﷺ) said: "Indeed for everything there is a heart, and the Qur'an's heart is Ya Sin. Whoever recites Ya Sin, then for its recitation, Allah writes for him that he recited the Qur'an ten times."