Complex sentence: The Guru decreed that the occasion of the festival of Holi be the occasion for the display of the martial spirit of his people and he gave this festival of Holi the Sikh name of'Hola Mohalla'.
Split into simpler sentences: The guru decreed that the occasion of the festival of Holi be the occasion for the display of the martial spirit of his people. He gave this festival of Holi the Sikh name of'Hola Mohalla'.