How can I return to Singapore without breaking the law without a circumcision permit?

If you have left Singapore but have not applied for a separation permit in time, you can apply to the Singapore Immigration & Checkpoints Authority (Immigration & Checkpoints Authority) to extend or reissue a separation permit. If the period specified in the cut-off permit has expired, you need to apply for an exemption from the Singapore Immigration and Checkpoints Authority. Only after obtaining the exemption can you legally return to the country.