On Tuesday the accused saw his wife in conversation with Zakir.
In a fit of rage he hit Zakir on the head with a hammer and he fell to the ground unconscious.
Also read: Assam: Total 67 inmates of Jorhat Central Jail test positive for COVID19
He was rushed to Jorhat Medical College and Hospital, where he died in the morning on Wednesday.
A case has been registered against the accused, who has been booked under Sections 326 and 302 of the Indian Penal Code.
A police source said that Qureshi had a few days ago reportedly beaten his wife on suspicion of her having an affair with Zakir, who lived in the same neighbourhood.
His wife had lodged a complaint at the Pulibar Police Station in this regard.
Following the complaint the police had arrested Qureshi, who was later released on bail.
