Jam Salahuddin Shah II's Second Invasion of Samanagar () happened in November 1521. Samma dynasty reached a critical point when Jam Salahuddin II, supported by Gujarati troops, Sodhas, Jareja Sammas, Sahta Sammas, and Khangars launched a campaign against Jam Feroz II. The second conquest of Samanagar secured Jam Salahuddin's dominance, with Jam Feroz's reliance on Arghun support diminishing his credibility among Sindhis.
In JanuaryâÂÂFebruary 1521, Shah Beg Arghun moved his camp from Samanagar. Following defeat at the Second Battle of Thatta, Jam Feroz came to submit, and his submission was accepted. Sindh was divided: the southern part, south of Laki, was given to Jam Feroz as Shah Beg Arghun's governor and protégé, while Northern Sindh's two sarkars Bukkur and Sehwan were annexed and placed under Shah Beg's direct control. As a protégé, Feroz agreed to share part of the land revenue with Shah Beg Arghun. This subservience led to Feroz losing respect and prestige among his people. After spending three days at Talti, Shah Beg Arghun returned to Shal and Siwi, while Jam Feroz resumed his rule over Samanagar. However, in November 1521, Jam Salahuddin, took advantage of the weakening situation in Sindh and invaded Samanagar with a large army.
The Jareja Samma chief Khengar occupied Rahimki Bazar and Virawah, two critical border posts in southern Sindh. This action was a direct response to Jam Feroz's earlier support for Rawal, Khengar's adversary in Cutch. The strategic occupation was intended to block any assistance from Jam Rawal to Jam Feroz. Along with this assistance he also provided Cutchi Troops.
In Samanagar, faced with Salahuddin's forces, Jam Feroz and his regent, Kasim Kabaka Arghun, abandoned their position and fled to Sivistan. Jam Salahuddin's army subsequently clashed with Daulatshah and the Nargahi Mongol tribes, who had been recruited by Jam Feroz to bolster his defence. The battle was decisively won by Salahuddin, who consolidated his control over lower Sindh.
Following his victory, Salahuddin annexed the Sarkars previously under Jam Feroz IIâÂÂs control, which included:
This action of Jam Salahuddin II led to the Battle of Chelhar, where he and his son Jam Haibat Khan were martyred.