Guru nanak formula about calculation of Muhammad name from numerical values letters the Urdu alphabet?

There's no known formula attributed to Guru Nanak that calculates the numerical value of the name "Muhammad" using Urdu alphabet letters. Such calculations, known as *abjad* or *gemmatia*, are common in various traditions, including Islamic numerology, but there's no documented evidence linking a specific formula of this kind to Guru Nanak's teachings or writings. While Guru Nanak respected other faiths and emphasized universal brotherhood, the practice of gematria as applied to the name Muhammad is not a part of established Sikh theology or history.