Raja of Jodhpur invited Humayun
The History of India, as Told by Its Own Historians/VII. Tarkhán-náma or Arghún-náma by Sir H. M. Elliot, Edited by John Dowson, 1867, Volume I writes at page-316
"The Emperor sent Amír Táhir Sadar and Samandar Beg to Mirzá Sháh Husain in Thatta, reminding him of the ties of amity and friendship which had existed between the Tarkháns and the late Emperor Bábar. Mirzá Sháh Husain paid much honour to the royal messengers, and said that if the Emperor intended to invade Guzerát, he, the Mirzá, attended by his whole army, would accompany him on the expedition, and not return till the conquest had been effected."
Sir H. M. Elliot further writes at page-317-
"Owing to these unfortunate circumstances, the army was greatly distressed. At this juncture the Emperor received a petition from
Rájá Máldeo of Jodhpur , intimating that during his majesty's absence, the Rájá had continued his faithful servant, and hoped for his arrival. Should the Emperor deem it fit to bring his ever prosperous army, the
Rájá was at his service with 20,000 Rájpúts, and would accompany the
Imperial army to whatever place it may be directed to march.
In consequence of this invitation, in Rabí'u-l Awwal, A.H. 949 (May-June, 1542), the Emperor marched towards the territories of
Rájá Máldeo.