As many as 16 wickets fell on day three after Jammu and Kashmir started the day at 103 for four.
Jadeja, after completing a double hundred on day two, took four wickets in the first innings while the remaining were picked up by another left-arm spinner, Dharmendersinh Jadeja.
The visitors were all out for 156 in the first innings and were asked to follow on.
While the two Jadejas run riot in the first innings, Saurashtra offie Vandit Jivrajani ran through the opposition batting in the second essay.
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Eventually, Jammu and Kashmir were bowled for 256 in their second innings with Puneet Bisht and Ram Dayal scoring half centuries.
As expected, Ravindra Jadeja was named the man of the match and his performance is a reminder to the selectors.
Brief scores: Saurashtra 624/7 decl. J&K 156 all and 256 all out in 84.1 overs (Bisht 55, Dayal 56; Jivrajani 6/79).
At Nadiad: Kerala 208 and 203 (Piyush Chawla 3/66, Siddharth Desai 6/80)
Gujarat 307 and (Target 105) 22/1.