Complex sentence: He rejoined his father 20 February 1660, and imprisoned at Salimgarh Fort in Delhi, 8 May 1660, transferred and imprisoned at the Gwalior Fort on the orders of his father, form 14 January 1661 to December 1672.
Split into simpler sentences: He rejoined his father on February 20th, 1660 and was imprisoned at Salimgarh Fort in Delhi, 8 May 1660. He was transferred to and imprisoned at the Gwalior Fort on the orders of his father, from January 1661 to December 1672.