Narrated Anas:
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." (JA)
English reference (JA): Vol. 5, Book 42, Hadith 2887 (JA)
Arabic reference (JA): Book 45, Hadith 3129 (JA)