The Custodian of the Two Holy Mosques, King Salman bin Abdulaziz Al Saud, and Crown Prince Mohammad bin Salman bin Abdulaziz Al Saud have sent cables of congratulations to the leaders of Islamic countries on the occasion of Eid al-Fitr, the Saudi Press agency reported Thursday. King Salman and the Crown Prince also received cables of congratulations from the leaders of Islamic countries on the advent of Eid Al-Fitr.