Zubaida (زبيدة) is the Arabic word for "cream of milk" — meaning the finest essence. Queen Zubaida (763-831) was the powerful wife of Caliph Harun al-Rashid of Baghdad — built the Darb Zubaida pilgrimage road from Iraq to Mecca.
Mentioned throughout One Thousand and One Nights.
Zubaida reduces to six — the number of Abbasid queen.