The Prophet ﷺ said, "Everything has a heart, and the heart of the Quran is Ya-Sin. Whoever recites Ya-Sin, Allah will record for him, by its recitation, the reward of reciting the Quran ten times."
حدثنا قتيبة وسفيان بن وكيع قالا حدثنا حميد بن عبد الرحمن الرؤاسي عن الحسن بن صالح عن هارون أبي محمد عن مقاتل بن حيان عن قتادة
قال النبي ﷺ إن لكل شيء قلبا وقلب القرآن يس ومن قرأ يس كتب الله له بقراءتها قراءة القرآن عشر مرات
No references are available.
Referencing. Its chain of transmission is daif. Darimi also related it (456/2, no. 3419) from the hadith of Humayd, through him.Harun Abu Muhammad is majhul, as stated in Taqrib.On this subject there is also a report from Abu Bakr Siddiq, narrated by Hakim Tirmidhi as mentioned in Tuhfat Ahwadhi, and from Abu Hurairah (Bazzar, Kashf Astar, 3/87, no. 2304).