وَعَن معقل بن يسَار الْمُزنِيّ رَضِيَ اللَّهُ عَنْهُ
أَنَّ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «مَنْ قَرَأَ (يس) ابْتِغَاءَ وَجْهِ اللَّهِ تَعَالَى غُفِرَ لَهُ مَا تَقَدَّمَ مِنْ ذَنبه فاقرؤوها عِنْدَ مَوْتَاكُمْ»
The Prophet (sallallahu alayhi wa sallam) said:, “If anyone recites Ya Sin (Qur’an, 36) out of a desire for God’s favour, his past sins will be forgiven him; so recite it over those of you who are dying.” Baihaqi transmitted it in Shuab al-iman.
Mishkat al-Masabih 2082, Book 9, The Excellent Qualities of the Qur'an, Hadith 68. 1 min read