The Book of Jahāngīr's Fortune 20: Shah Jahan.

20

[It has already been mentioned that Shah Jahan, with a small party of adherents, had proceeded to Thatta. In former years he had kept up friendly relations and correspondence with Shah ’Abbas of Persia, and in his present difficulties he entertained the idea of going to him, hoping to receive a friendly reception, until by some means he got over his troubles. On approaching Thatta, Sharifu-l Mulk, the governor of the country, and a devoted servant of Shahriyar’s, came forward arrogantly with 3000 or 4000 horse, and 10,000 infantry, collected from the country, to oppose Shah Jahan’s progress. The Prince had with him only 300 or 400 horse; but Sharifu-l Mulk was afraid to attack them, and retired into the fortress of the city. The fortress had been lately repaired, many guns had been mounted, and chosen parties of men held the various bastions, prepared to make a vigorous defence. Shah Jahan forbad any attempt upon the fort, and desired to avoid a sacrifice of life from the fire of the fortress. A party of his brave fellows, not heeding his prohibition, made an attack; but the works were too strong, and the fire too heavy, so they were repulsed. Some days later another party, unable to repress their ardour, made another attack. The ground round the fortress was level and open, with not a mound, a wall, a tree, or any kind of shelter. So they placed their shields in front of them, and rushed forward. They came upon a broad and deep ditch, which was full of water. To advance was impossible, to return still more so. Trusting in Providence as their fortress, there they stayed. Shah Jahan sent to recall them, but they did not retire. Some of his most devoted servants went to bring them back ; but each one that went took part with them, and choosing the road to death, never returned.
Various events now occurred to prevent Shah Jahan from proceeding to Persia. Prince Parwez was very dangerously ill, and the attempt to subdue Thatta seemed futile, so he determined to return by way of Gujarat and the country of Bihara (Birar?) to the Dakhin. Being weak and ill, he was obliged to travel in palki. He now received intelligence of the death of Prince Parwez, and this hastened his movements. He pursued the route which Mahmud of Ghazni had taken when he conquered Somnath. Passing by Rajpipliya, he arrived at Nasik Tirbang in the Dakhin, where he had left his stores and equipage.]