Harbhajan Singh Khalsa of Sikhism, praised Singh highly for his work in spreading Sikhism in the West. In his words, "Glory be to the Guru who performs His work in the Western Hemisphere through this instrument. Blessed be those who have learned from him the teachings of the Guru, to accept and follow those teachings in unswerving faith and in humble recognition of the good that Harbhajan Singh has done in furthrance of the Guru's mission." Dr. Fauja Singh, M.A., Ph.D, Professor and Director, Department of History and Punjab Historical Studies, Punjabi University, Patiala, India praised Singh's marriage of yoga and religion, saying
Harbhajan Singh in further controversy after an 2008 Indian Premier League (IPL) match between Mumbai Indians and Kings XI Punjab at Mohali in April 2008. While the teams were shaking hands, he slapped Punjab paceman and Indian teammate Sreesanth in the face. Harbhajan, who had stood in as the Mumbai captain for the first three matches of the tournament to that point, all of which were lost, had apparently been angered by Sreesanth's aggressive sending-off of his batsmen as Punjab coasted to a decisive victory. The Kings XI Punjab lodged an official complaint to the IPL. The match referee Farokh Engineer found