Muhammad Shah died on 21st April A.D. 1375,[55] and was succeeded by his son Mujahid, then nineteen years old. Shortly after his accession Mujahid wrote to Bukka Raya (still called "Kishen Roy" by Firishtah[56]), "that as some forts and districts between the Kistnah and Tummedra (Tungabhadra) rivers were held by them in participation, which occasioned constant disagreements, he must for the future limit his confines to the Tummedra, and give up all on the eastern side to him, with the fort of Beekapore and some other places." This "Beekapore" is the important fortress of Bankapur, south of Dharwar. The Dakhani sovereigns always looked on it with covetous eyes, as it lay on the direct route from Vijayanagar to the sea, and its possession would paralyse Hindu trade. The Raya replied by a counter-demand that the Sultan should evacuate the whole of the Doab, since Raichur and Mudkal had always belonged to the Anegundi family. Bukka declared the Krishna river to be the true boundary, and asked that the elephants taken by Sultan Muhammad should be restored. The Sultan's answer was a declaration of war. He advanced in person, crossed both the rivers, and arrived before Adoni. On hearing that the Raya was encamped on the bank of the Tungabhadra, he left one force to besiege the fortress, sent another to advance towards Vijayanagar, and himself marched, probably in a north-westerly direction, towards the river, "by slow marches and with great caution." The Hindu prince at first prepared to receive his attack, but for some reason[57] lost heart and retired to the forests on the hills of Sandur, south of his capital. Firishtah here pays a tribute to the interest felt by the inhabitants of this part of India in the new city, then only forty years old, but evidently growing in grandeur year by year. "Mujahid Shaw, having heard great praises of the beauty of the city, advanced to Beejanuggur; but thinking it too strong to besiege at present, he moved in pursuit of the enemy in the field." Now follows a passage on which it is difficult to place full reliance, but which only echoes common tradition. It runs to the effect that, on the advance of the Sultan, the Raya