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 (see: Hamiri, Qorab al-Asnad, p. 159; Koleini, Al-Kafi, Vol. 3, p. 494; Ibn al-Qouluye, Kamel Al-Ziarat, p. 70; Man La Yazira al-Faqih, Vol. 1, p. 232; Toosi, Tahzib Al- Ahkam, Vol. 3, p. 252), 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.