Custody of kids

A couple is married for 7 years and the wife left 2 small kids with husband and his 66 yrs old mother. Wife then lodges a fake complaint in women cell and files a false 498A case after a year in punjab where she stays, and as per court order the couple is told to give the marriage another chance and stay separately from the mother of the husband and the woman is still torturing the husband mentally and financially. In this scenario if husband needs divorce then how can he initiate? Since he's not able to afford alimony the wife is demanding. And who will get custody of 2 boys? Keeping in mind that the wife had signed a statement in presence of police while leaving the 2 kids at time of leaving the in laws house in Delhi. And kids were raised by husband and his old mother for those 2 years while the wife had filed a false case from her hometown. Pls note that the husband has a no dowry certificate signed by wife and her parents after a year of marriage. And video proofs that no dowry was demanded.