Dear Ajay,
If an employee rejoins the same organization after 15 days of resigning, then in this case, a new PF number cannot be allotted to such an employee. The old PF account of that employee will be used for the purpose of PF contribution submission.
Secondly, for transferring the old PF fund to a new PF account, one need not wait for a 60-day period. It can be transferred at any time after joining somewhere else. The interest in such cases will be accumulated for up to 3 years of non-active status.
Thirdly, the declaration clause for non-employment is as follows:
"In the case of submission of an application for settlement under clause (s) of sub-paragraph (i) and in clause (b) of sub-paragraph (2) of paragraph 69 of the EPF Scheme, 1952, the claim should be submitted after two months from the date of leaving service provided the member continues to remain unemployed in an establishment to which the Act applies." A snapshot of the declaration on Form-19 is also attached, please see.
I hope this clarifies your doubts. Cheers.