Bahadur Ji decided to stand up for the right of freedom of
worship and told the delegation to tell Aurangzeb that if he could
convert Guru Tegh Bahadur they would gladly convert.
Four days later Guru Tegh Bahadur ji was arrested, along with some of his followers, Bhai Dayala, Bhai Mati Das and Bhai Sati Das by Nur Muhammad Khan.
After Mati Das, Dyal Das and Sati Das were tortured and executed on
three consecutive days, Guru Tegh Bahadur was beheaded at Chandni Chowk
in 1675. Guru Tegh Bahadur is popularly known as “Hind Di Chadar”
i.e. “The Shield of India”, in reference to his popular image as
sacrificing his life for the protection of religious freedom in India.

Bhai Sati Das, Bhai Mati Das & Bhai Dayala

Mati Das while standing erect was tied between two posts.He was asked if he had any parting words, to which Mati Das answered, “I request only that my head be turned toward my Guru as I am executed.”
Two executioners placed a double-handed saw on his head. Mati Das
serenely uttered “Ek Onkar” and started reciting the Japji Sahib, the
great morning prayer of the Sikhs. He was sawn in half from head to
loins. It is said that even as the body was being sawn into two, the
Japji continued to reverberate from each part until it was all over.Bhai Sati Das was wrapped up in cotton wool, set alight and was roasted alive.
He remained calm and peaceful and kept uttering Waheguru, waheguru,
waheguru (Sikh meditation). His martyrdom is remembered by the Sikhs in
their daily prayers. This happened on 24 November 1675,