Analysis of information sources in references of the Wikipedia article "Sikh gurus" in English language version.
The author of the Dabistan refers to the belief of the Sikhs in the unity of Guruship. The spirit of Guru Nanak entered the bodies of his successors - Guru Angad, Guru Amar Das, Guru Ram Das and Guru Arjan. That was why each Guru was referred to as mahal: Guru Nanak as the first mahal, Guru Angad as the second mahal, and in this way Guru Arjan as the fifth mahal. A Sikh who does not regard Guru Arjan as Baba Nanak is not a true Sikh. The firm belief of the Sikhs is that all the Gurus are Nanak. Indeed, Bhai Gurdas underscores the unity of Guruship from Guru Nanak to Guru Hargobind in one of his Vaars. This is reiterated in another Vaar in which the metaphors of light and water are used to emphasize that they all are the same.The idea of the unity of Guruship emphasized by Bhai Gurdas legitimized the succession of Guru Hargobind to face the rival claim of Prithi Chand and his descendants.
The ten Gurus organised their disciples into sangats and infused their personality again into the Sikhs. This led to a remarkable development in the institution of 'Guru-ship', which eventually became the Guru Panth, thus bestowing divinity on the people. ... The Sikh assemblies also acquired great sanctity, owing to the belief that the spirit of the Guru lived and moved among them collectively, the whole body being called the panth. This panth follows the path shown by the way the Gurus lived their lives, as also the precepts laid down by them. In turn, it is regarded as an embodiment of the Guru—Guru Panth. In 1699, Guru Gobind Singh, the tenth Guru, himself received baptism from the five Sikhs he had first initiated. The panth, the assembly and the Guru became one. After his demise, there was no living Guru for the Sikhs. The Shabad, in the presence of the sangat, became the Guru, the guiding light and in presence of Akalpurakh, the Timeless Being. The panth thus was invested with the personality of the Guru, and the incorporated Word became Gyan Guru (knowledge). This panth, called the Khalsa, was to be the Guru in spirit, and was authorised to work with collective responsibility, with Guru Granth Sahib as its guiding spirit.
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