يسٓ
Commentary:
In the combined abbreviated letters یاسین the word سین according to Ibn ‘Abbas stands for الانسان meaning, man or perfect man, or for سید i.e. chief or leader. Thus the expression یاسین would mean, "O Perfect Man!" or "O Perfect Leader!" According to the consensus of scholarly opinion, the reference in these combined letters is to the Holy Prophet. The Prophet has been addressed as "Perfect Man" because humanity found its best and most perfect specimen in him. He has also been called "the Perfect Leader," because after his advent great religious Reformers and divine teachers were to rise only from among his followers. The door of revelation has been closed to the followers of all other Prophets. He is therefore "the perfect man" or the "leader par excellence."
In the combined abbreviated letters Ya Sin, the letter Sin according to Ibn-e-‘Abbas stands for al-Insan meaning, man or perfect man; or for Sayyid (chief or leader). Thus the expression Ya Sin would mean, 'O Perfect Man!' or 'O Perfect Leader!' According to consensus of scholarly opinion, the reference is to the Holy Prophet. He was 'the perfect man' because humanity found its best and most perfect specimen in him and he was 'the perfect leader,' because after his advent great religious Reformers and Divine Teachers were to rise only from among his followers, the door of revelation having been closed to the followers of all other Prophets.