The Saka Sirhind or the Chhotte Sahibzada Saka refers to the killing and martyrdom (Shaheedi) of the two sons of Guru Gobind Singh, named Zorawar Singh and Fateh Singh. The two Sikh children are remembered as the Chhotte Sahibzade. They are believed to have attained martyrdom on 26 December 1704 at the ages of 5(or 6) and 9 respectively. In remembrance of this occasion, the Shaheedi Jor Mela is organised annually at Fatehgarh Sahib Punjab, India, to commemorate the supreme sacrifice at the place of their martyrdom on the 24th to 26 December.

Shaheedi Sabha is a three-day annual religious congregation (get-together) organised every year in December at Gurdwara Fatehgarh Sahib, in the Fatehgarh Sahib district of Punjab, India to pay homage to the martyrdom of Chhotte Sahibzade Baba Zorawar Singh and Baba Fateh Singh, the youngest sons of the 10th sikh guru Guru Gobind Singh.