Pictures on twitter depict Collis and his wife, Huda Mujarkech garbed in the Ihram, the white traditional clothes donned by pilgrims during the five days of Hajj in Mina.
After having joined the UK Foreign and Commonwealth Office in 1978, Collis subsequently served as British Ambassador to Iraq, Syria and Qatar. He was British Consul-General in Dubai and Basra. He also served in Tunis, New Delhi and Amman.
The five days of Hajj with it's spiritual and physical challenges started on Saturday and will end on Thursday.
Source: TRT World