Explanation:

After crossing the Khyber pass Guru Nanak Dev Ji reached Sayyidpur passing through Peshawar, Hasan Abdal and Gujarat. At that time Babur had invaded Sayyidpur. During this invasion Babur committed many atrocities on the people and imprisoned many of them. Guru Nanak Dev Ji was one of those prisoners. When Babur came to know about it, he himself came to meet Guruji. He was greatly influenced by the personality of Guruji. He released Guruji and other prisoners along with him. Guru Nanak Dev Ji has severely criticized the invasion of Babur in his Babarbani.