(b)having commenced such cultivation, discontinues the same within ten years of the said date, he shall forthwith restore possession of the land to the tenant whose tenancy was terminated by him unless he has obtained from the tenant his refusal in writing to accept the tenancy on the terms and conditions prevailing before the termination of the tenancy or has offered in writing to give possession of the land to the tenant on the said terms and conditions and the tenant has failed to accept the offer within three months of the receipt thereof: