There are some valid and invalid points from both sides. Muslims say non-Muslims are not allowed to point their legs at Mecca, but at that time, it wasn't impossible to enter. They also label the Guru as a Muslim, which isn't true because his successor would have known if he became a Muslim. Guru did go to Mecca and had conversations with qazis. However, turning Mecca or doing miracles in Baghdad consists of more moral and spiritual lessons than being real. From the Sikh side, the problem lies with the wrong translations. Bhai Gurdas Vaaran - Var 1 - Pauri 32 ਜੀਵਣਿ ਮਾਰੀ ਲਤਿ ਦੀ ਕੇਹੜਾ ਸੁਤਾ ਕੁਫਰ ਕੁਫਾਰੀ। The qazi named Jivan kicked him and asked who was this infidel enacting blasphemy. Bhai Gurdas Vaaran - Var 1 - Pauri 32 ਟੰਗੋਂ ਪਕੜਿ ਘਸੀਟਿਆ ਫਿਰਿਆ ਮਕਾ ਕਲਾ ਦਿਖਾਰੀ। Catching hold of the legs, he lynched (Baba Nanak) and lo and behold the miracle, the whole of Mecca seemed to be revolving. Bhai Gurdas Vaaran - Var 1 - Pauri 34 ਧਰੀ ਨੀਸਾਣੀ ਕੌਸ ਦੀ ਮਕੇ ਅੰਦਰਿ ਪੂਜ ਕਰਾਈ। The wooden sandal (of Baba Nanak) was kept as a memory, and he was worshipped in Mecca. My understanding- A qazi named Jivan is mentioned. However, it is an Indian name; an Arabian Muslim qazi around 400 years ago having such a name is not possible. According to Mahankosh, an encyclopedia by Sikh scholar Kahn Singh Nabha, Jivan means force (p1734). According to sakhiyan (stories of Gurus), his name was Rukan-ud-din. When the Guru turned his feet towards Mecca, the qazi used some force to kick, grabbed his feet, and dragged him. The Guru rejected directional prayers which 'turned Mecca' because he had a different belief, but he was a holy man, which made the qazis respect him. The mind is also called Mecca in Sikh terminology (Page 1158). Another point is that the Guru's sandals were kept there and the Guru was worshipped. Anyone familiar with Mecca's history would know that it's impossible. Qazis came to discuss religion, and the Guru said that claiming to be religious is not enough; without good deeds, everything is useless, and he answered their other questions. The Guru gave them knowledge, which they used during prayers at Mecca. This knowledge/symbol is wrongly translated as sandals and their prayers as worshipping the Guru. There are many other reasons this is wrong, such as SGGS rejecting supernatural powers as useful or Sikh Gurus not showing powers to Hindu Siddhas but proving them wrong with truth alone. This is a logical and realistic approach; however, if Prophet Muhammad can split the moon in half, Guru Nanak can also turn Mecca.