سَلَامٌ عَلَى إِلْ يَاسِينَ
“Il Yasin” is exactly same as “Aal e Yasin”. Infact “Il” has more ‘takeed’ in it (you can verify this with any native Arabic speaker given he knows what he is talking about)
Elijah is simply called as Ilyas by Quran- and not “Ilyasin”.
There is a reason why i asked that brother. Read the following conversation between Al Mamun and Imam Ali Reza (as):
"…Prophet and the angels seek forgiveness for him. believers, pray for the Prophet and greet him with, "Peace be with you. Holy Qur’an 33:56).
All the obstinate realized that when this Verse was revealed, some people came to the Holy Prophet(S.A.W.) and asked him to teach them how to pray for him. Holy Prophet(S.A.W.) instructed, “Say: O Allah, bless Mohammed(S.A.W.) and Mohammed’s family the way you blessed Abraham and Abraham’s family. You are surely Praiseworthy and Glorious.” Can any one of you disagree to this?
“No, no one can,” answered the scholars. Al-Ma’mun said, “This is a unanimous thing. However, we need something more evident about the Holy Prophet’s family excerpted from the Holy Quran.”
Imam Reza(A.S.) said: Allah says: Yasin, by the Quran, the Book of wisdom, you are a Messenger and you follow the right path. (Holy Qur’an 36:1-4) Who is that Yasin?
“Undoubtedly,” said the scholars, “Yasin is Mohammed(S.A.W.).”
Imam Reza(A.S.) commented: Allah has given to Mohammed(S.A.W.) and his holy family a characteristic that, except the heedful, no one can attain its meaning. In the Holy Quran, Allah blesses no one save the prophets(A.S.). He the Exalted says:
"Peace be with Noah among all men in the worlds. Holy Qur"an 37:79)
"Peace be with Abraham. (Holy Qur"an 37:109) and
"Peace be with Moses and Aaron. (Holy Qur’an 37:120)
Allah, thus, does not bless the family of Noah, Abraham, or Moses. But He blesses Mohammed’s family in His saying: Peace be with the family of Yasin. (Holy Qur’an 37:130) Yasin is Mohammed (S.A.W.).
Al-Ma’mun expressed, “I have already known that only the core of the prophecy can explain this clearly.”