In this paper, our leading objective is to relate the fractional integral operator known as
P
δ
-transform with the
ք
-extended Mathieu series. We show that the
P
δ
-transform turns to the classical Laplace transform; then, we get the integral relating the Laplace transform stated in corollaries. As corollaries and consequences, many interesting outcomes are exposed to follow from our main results. Also, in this paper, we have converted the
P
δ
-transform into a classical Laplace transform by changing the variable
ln
δ
−
1
s
+
1
/
δ
−
1
⟶
s
; then, we get the integral involving the Laplace transform.