quality:corruption, linguistic:paraphrasing
Religious policy

Babur defeated and killed Ibrahim Lodi, the last Sultan of the Lodi dynasty, in 1526. Babur ruled for 4 years and was succeeded by his son Humayun whose reign was temporarily usurped by the Suri dynasty. During their 30-year rule, religious violence continued in India. Records of the violence and trauma, from Sikh-Muslim perspective, include those recorded in Sikh literature of the 16th century. The violence of Babur in the 1520s was witnessed by Guru Nanak, who commented upon it in four hymns. Historians suggest the early Mughal period of religious violence contributed to introspection and then the transformation in Sikhism from pacifism to militancy for self-defense. According to Babur's autobiography, Baburnama, his campaign in northwest India targeted Hindus and Sikhs as well as apostates (non-Sunni sects of Islam), and an immense number were killed, with Muslim camps building "towers of skulls of the infidels" on hillocks.