When a man had given divorce to his wife, recite all seegay ( that specific words by which divorce become properly valid ) and spent 3 months which gave the time for thinking "Is the decision of divorce is good for them,they satisfied by their decision or not?", and after that he again want his wife back. Is it possible to make Nikkah again with that person or there is any specific Islamic rule or process to take wife back again?
If he divorce once or twice it is possible to take the wife back with new nikah. If he divorced three times then he can not marry wife until wife marry with someone else and get divorced again. Please study Surat Baqarah 229 and 230 ayat.