Let us review this tradition...
Let us review this tradition, which is referred to Imam -asws : المناقب لابن شهرآشوب حكي أن المنصور تقدم إلى موسى بن جعفر بالجلوس للتهنية في يوم النيروز و قبض ما يحمل إليه فقال إني قد فتشت الأخبار عن جدي رسول الله ص فلم أجد لهذا العيد خبرا و إنه سنة للفرس و محاها الإسلام و معاذ الله أن نحيي ما محاه الإسلام فقال المنصور إنما نفعل هذا سياسة للجند فسألتك بالله العظيم إلا جلست فجلس إلى آخر ما أوردناه في باب مكارم أخلاق موسى بن جعفر صلوات الله عليهما · Once Al-Mansoor -la invited Imam Musa-e-Kazim -asws on the festival of Nouroz and asked Imam -asws to accept Eid-e-Nouroz gifts, Imam -asws replied: ‘I am not aware of any traditions from our grandfather Rasool Allah -saww regarding this Eid.
Imam -asws further added that this is the Eid of Persians and Islam has disregarded it and ‘Allah forbid’ why shall I observe it. Al-Mansoor, insisted on celebrating it for political reasons and asked Imam -asws to stay there with him until the end of the event.
[14] It is true that Masomeen -asws have never mentioned, in any of their traditions, that it is a day of ‘Eid’ but have told their follower to observe it as a ‘Day of Blessings’, and to benefit from the blessings which Allah -azwj has, and will He -azwj always extends at the onset of sun’s rays on the face of the earth, as we shall see in several traditions of Masomeen -asws presented here and also appended to this article, subsequent to first dealing with the scepticism on Nouroz-day.
Two Main Objections on Nouroz-Day: Some of the enemies of Ahlul Bait -asws (i.e. Mohammed Hussain Dahko and alike), have rejected the religious relevance of this ‘Blessed day’ based on the above-mentioned tradition, as well as raising two further objections: (1) Why one should observe any day based on Solar rather lunar system.(2) They have discredited the reliability of the narrator of ‘Nouroz-Day’ Al-Muala Ibne Qunais.