Is money combined with gold to reach the nisab, along with mentioning the opinions of the madhhabs and the evidence?

Paper currency was not known to the early jurists. However, they issued fatwas permitting the combining of gold and silver to complete the nisab (definition), and they allowed the combining of the value of trade goods with gold or silver to complete the nisab. As for now, contemporary Fiqh Academies and Councils of Scholars have issued fatwas mandating zakat (definition) on paper currency if its value reaches the lower of the two nisabs (that of gold or silver), or if it completes the nisab when combined with other currencies or trade goods. This is the view of the majority of contemporary scholars.