General :: Recursive String-search In Files?

find out a command to search among all *.dat files in a certain path (including subdirectories) looking for the following text in them:

Code:

--------------------------------------------------------------------------------
Elements with small area
Element Adjusted nodes
--------- --------------
16294 NO
17889 NO

and getting the list of elements with small area printed in a file "ErrorEl.txt". The output should have this form:

"/path/01/A.dat
bad-el#01
bad-el#02

[code]....

I know already how to find out the dat files containg a certain string

Code:

c=/path/
grep -R --include="*.dat" "Elements with small area" $c | cut -d: -f1>> ErrorEl.txt

but I don't know then how to get the element numbers(16294 and 17889 in the example above)