Minister of Islamic Affairs, Endowments, Call and Guidance Sheikh Salih bin Abdulaziz Al Alsheikh arrived here this evening to head the Saudi delegation participating in the activities of the 20th Conference of the Supreme Council for Islamic Affairs due to be held tomorrow under the theme "Social Security Components in Islam". The four-day Conference will be patronized by President Mohamed Hosni Mubarak of Egypt. At Cairo International airport, the Minister was received by Dr. Mahmoud Hamdi Zaqzouq, the Egyptian Minister of Endowments and Saudi Ambassador to Egypt Hisham Mohieddin Nazer.