Depiction of Bhai Dayala being boiled alive.
|Died||11 November 1675|
|Cause of death||Death by boiling|
|Known for||Martyrdom, Being Masand of the Patna Sangat and responsible for Patna Suba.|
Bhai Dyala ji (Punjabi: ਭਾਈ ਦਿਆਲਾ ਜੀ, Hindi: भाई दयाला जी; died 9 November 1675) also known as Bhai Dyal Das, was an early martyr of the Sikh faith who was martyred alongside his companions Bhai Mati Das and Bhai Sati Das and the Ninth Guru, Guru Tegh Bahadur. Bhai Dayala, was also the brother of Bhai Mani Singh, and belonged to the Dullat Jat caste. Hence Bhai Dayala ji along with their family lineage and ancestors are Jat, and was boiled alive at Chandni Chowk at Delhi in November 1675.
There are varying accounts of Bhai Dayala's birthplace, family, and caste.
Bhai Dyala being of Dullat Jat class
Bhai Dayala may have belonged to Dullat family of Chaudhury Bika Dullat (Jatt). He is said to have been a real brother of Bhai Mani Singh Dullat from Kambowal, now Longowal, Sangrur, Punjab, whom Giani Gian Singh Dullat has connected with Bhai Mani Singh. This inference however was arbitrarily drawn by someone from Longowal based on the erroneous information provided by Giani Gian Singh in the first edition of his Panth Parkash (published 1874 AD) in which it is erroneously stated that Bhai Mani Singh Dullat was son of Chaudhury Bika Dullat and had four brothers, including one named Nagahya. But Giani Gian Singh nowhere stated that Bhai Dayala was one of the five sons of Chaudhury Bika Dullat or that he (Bhai Dayala) was a brother of Bhai Mani Singh Dullat In later editions of his Panth Parkash, Giani Gian Singh writes that Bhai Mani Singh Dullat had only one elder brother, Bhai Nagahya Dullat (whom he claims is a "Bhagat" or a religious person) and that "the name of their father was Chaudhury Kala Dullat" The claim that Bhai Dayala was real brother of Bhai Mani Singh Dullat and hailed from Kambowal (now Longowal) is negated by Giani Gian Singh's own writings in later editions.
Service of Guru Har Krishan
Service of Guru Tegh Bahadur
Bhai Dayala was known to be one of the Gurus most dearest and closest companions. Bhai Dayala was the chief of the sangat (holy congregation) at Patna Sahib and enlisted incharge of all the masands in the east, and when the Guru's sun Gobind Rai (Gobind Singh) was born it was him who sent Guru Tegh Bahadur a letter, who was at Dacca, informing him of his son's birth.
Bhai Dayala helped take care of the Guru's son with the help of Bhai Kirpal and was with the Guru at Lakhnaur where the Guru was with his family and son Gobind Rai when they came from Patna and headed to Baba Bakala around 1672. 
Bhai Dayala was one of the Sikhs who accompanied Guru Tegh Bahadur when the latter left Anandpur for Delhi on 11 July 1675, the other two were brothers---Bhai Mati Das, a Dewan and Bhai Sati Das, a Scribe at Guru’s court. Along with the Ninth Guru, they were arrested on orders of Emperor Aurangzeb at Agra.
On November 11, 1675 after Bhai Mati Das' execution Bhai Dayala refuted with temperament against the Mughals calling Aurangzeb a tyrant and cursed him for committing atrocities in the name of God and religion and said there would be a demise of the Mughal empire. Bhai Dayala was tied with an iron chain like a bundle then was made to stand erect into a big cauldron full of water with only his head and shoulders seen. The vessel was then heated to the boiling point as Bhai Dayala began to recite Japuji Sahib. He was then roasted into a block of charcoal.
- See Panth Parkash (1st ed.), Bisram 43, Gian Singh Longowal.
- Singh, Giani Gian, Panth Parkash, Vibhag (1987), pg. 1317.
- Gandhi, Surjit (2007). History of Sikh Gurus Retold II: 1606-1708 C.E. New Delhi: Atlantic Publishers & Dist,. p. 605. ISBN 9788126908585.
- Gandhi, Surjit (2007). History of Sikh Gurus Retold II: 1606-1708 C.E. Atlantic Publishers. p. 664. ISBN 9788126908585.
- Johar, Surinder (1997). Guru Tegh Bahadur: A Bibliography (First imprint ed.). New Delhi: Abhinav Publications. p. 126. ISBN 9788170170303.
- Gandhi, Surjit (2007). History of Sikh Gurus Retold II: 1606-1708 C.E. Atlantic Publishers. p. 687. ISBN 9788126908585.
- Singh, Darshan (1975). The Ninth Nanak: A Historical Biography. K. Lal,. p. 71.
- Gandhi, Surjit (2007). History of Sikh Gurus Retold II: 1606-1708 C.E. Atlantic Publishers. p. 638. ISBN 9788126908585.
- Gandhi, Surjit (2007). History of Sikh Gurus Retold II: 1606-1708 C.E. Atlantic Publishers. p. 661. ISBN 9788126908585.
- Lakshman, Bhagat (1995). Short Sketch of the Life and Works of Guru Gobind Singh (AES Reprint ed.). New Delhi: Asian Educational Services. p. 15. ISBN 81206025764 Check
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- Singh, Gurpreet (2005). Soul of Sikhism. New Delhi: Fusion Books. p. 100. ISBN 978-8128800856.
- Bakshi, Ram; Mittra, Sangh (2002). Saints of India: Guru Gobind Singh. Criterion. p. 287.
- Singh, Gurpreet (2005). Soul of Sikhism. Delhi: Fusion Books. p. 100. ISBN 9788128800856.
- Gupta, Hari (1984). History of the Sikhs: The Sikh Gurus, 1469-1708. Munshiram Manoharlal. p. 386. ISBN 9788121502764.
- Punjab District Gazetteers: Rupnagar. Punjab (India). 1987. p. 56.