The third Sikh Guru reinforced the teachings of the previous Gurus by organizing the construction of twenty-two centers of religious learning for the Sikhs. Like his predecessors, he sharply criticized the practice of sati, where widows immolated themselves on the funeral pyres of their dead husbands. The Guru also required that anyone wishing to meet him would have to first partake in the common kitchen, called Langar, as a sign of equality. The Emperor Akbar, Muslim ruler of India, himself followed this tradition before meeting with the Guru.