What is the opinion of his honor about the mosque of Jamkaran and Al-Sahla?

The Al-Sahla mosque in Iraq is one of the old Islamic mosques, and performing prayer in it has a specific merit[1], but the Jamkaran mosque in Qom is not accredited and performing prayer in it has no specific merit, rather attributing its building to Mahdi based on a dream that is narrated by several intermediates from an unknown man, is an example of attributing lies to his Excellency, and attributing lies to his Excellency is a great sin.