He was well known as the donor of an extensive tract of land, which at the time was valued at Rs. 12,000, to the then British Government on which the Calcutta Medical College was built. The Government of Bengal recognized his liberality by naming a ward in his honor, "The Mutty Lall Seal Ward", for native male patients. Seal subsequently supplemented this gift by a donation of a lac of rupees for the establishment of a female (lying in) hospital which started functioning in 1838.