For some Muslims, the number 786 is considered sacred.
This belief stems from the fact that when the Arabic letters of the opening phrase of the Quran, "Bismillah al-Rahman al-Rahim" (In the name of God, the Most Gracious, the Most Merciful), are converted to their numerical equivalents according to the Abjad system, the total sum is 786. Many Muslims, particularly in South Asia, use 786 as a shorthand representation of this phrase. While not universally accepted as a "lucky number" within Islam, it holds a special significance for some due to its association with this important phrase.
Therefore, while not an official or universally recognized concept, 786 is often regarded by some Muslims as a number associated with good fortune and blessings, derived from the numerical value of the Bismillah. Other cultures within Muslim communities may also incorporate numerological beliefs based on different traditions, such as Chinese or Indian astrology.