Stipulation
/ˌstɪp.jəˈleɪ.ʃən/
noun
The act of stipulating; a contracting or bargaining; an agreement.
Something that is stated or stipulated as a condition of an agreement.
“If I lend you my car, my only stipulation is that you fill up the gas tank before returning it.”
The situation, arrangement, and structure of the stipules.