'It has been related that Mansur [Dawaniqi] ordered Imam Musa al-Kazim (AS) to sit with him to receive gifts and greetings for the day of Nayruz, so that he may take the gifts presented to him, so Imam replied, 'Verily I have examined the traditions from my grandfather the Prophet (SAWA) and have not found a single tradition about this festival. Rather it is a practice of the Persians which Islam eradicated, and God forbid that we should revive what Islam has eradicated.' So Mansur said, 'We only celebrate it as a matter of policy for our army, so I request you by Allah the Great to sit down', so he sat down ...'