History of Hindu Mathematics: A Source Book v1.c8.s10.16

v1.c8.s10.16

"The remainders obtained on division of each of the multiplicand and the multiplier by an optional number are multiplied together and then divided by the optional number. If the remainder so obtained be equal to the remainder obtained on dividing the product (of the multiplicand and the multiplier) by the optional number, then, it is correct."