Yes because that is Hadees that means told by not Zaid Hamid but HAZRAT MUHAMMAD SAW he just told us what HAZRAT MUHAMMMAD SAW told us if you have problem with sayings of HAZRAT MUHAMMAD SAW than that is your problem
The myth of Ghazwa-tul-Hind
religion has quite frequently been used as an excuse for military motives. Talking specifically about Islam, hadees has been used as a tool to invent excuses for political motivations and military interventions/attacks as and when required.
There has been enormous hue and cry over Ghazwa-tul-Hind for years. This was probably first used by self-styled ****** activists in Pakistan for getting public support in Pakistan and raising funds to be used in their attacks in Kashmir with the aim of conquering India and creating what they call dar-ul-Islam. It is very interesting to note that neither Arabs nor the Mujahideen of Afghanistan made use of these ahadees to wage a war against India. Pakistan army, ISI and the local Jihadis have a monopoly over Ghazwa-tul-Hind for now, although they dont talk specifically about Green Pakistani Jihadis waging the war.
Islamists and right-wing-military-apologists have fallen to the propaganda of Pakistan army and ISI when they propagate waging a war against the neighboring country India, finding excuses for ding so through hadees. Zaid Hamid, the mouth-piece of ISI and Pakistan army has been making use of Ghazwa-tul-Hind (6 hadees in total), promoting hatred against Hindus and war hysteria. These hadees are available here.
Are they authentic ?
Just a brief look at these will make it clear that none of these five ahadees are found in Sihah-e-Sitta. Two of these appear to be in the collections of ahadees by Imam Nisai but not in Sunan an-Nisai al Sughra, the book considered to be among the Sihah-e-Sitta, the six books considered most reliable by main-stream Muslims.
The others are not even found in the reliable collections of respected muhadiseen.
Note that Imam Nisai died in 915. The years of death of other respected muhadiseen to whom Sihah-e-Sitta are attributed to: Imam Bukhari in 870, Imam Muslim in 875, Abu Daud in 888, al-Tirmizi in 892, Imam Malik in 796, Ibn Maja in 886. All of them died before Imam Nisai. It does not make much sense that we have these ahadees being narrated through Imam Nisai but not through any of the other respected muhadiseen who lived before him.
They are narrated through a single chain. Reported only once through one companion of the Prophet.
Considering the reward for participating in this war and the importance of it, as these ahadees tell, they should have been narrated by more companions of the Prophet and should have been there in more books of ahadees.
It is very important to note that none of these are found in any of the collections of ahadees which the Shia Muslims consider authentic. This raises the question if they were invented by the Ummayads/Abbasids considering their expansionist designs? This is also to be noted that Ummayads did reach Sindh, a part of Hind back then.
One must also note the fact that we dont have any history report telling us about the use of these ahadees in the past by Muslim rulers or conquerors, even those who did invade India or waged a war on it. If they were respected and authentic ahadees, we should have such history reports.
What if they are authentic ?
It is also pertinent to examine how some well-known contemporary Indian ulema look at this hadith report.
Maulana Abdul Hamid Numani, a leading figure of the Jamiat ul-Ulema-i Hind, opines that this hadith was fulfilled at the time of the Four Righteous Caliphs of the Sunnis, soon after the demise of the Prophet Muhammad, when several companions of the Prophet came to India, mainly in order to spread Islam. [1]
Mufti Sajid Qasmi, who teaches at the Dar ul-Uloom in Deoband, is also of the same opinion, although he believes that it might also refer to the invasion of Sindh by the Arabs under Muhammad bin Qasim in the eighth century. [1]
On the other hand, Maulana Mufti Mushtaq Tijarvi of the Jamaat-i Islami Hind believes that it is possible that this hadith report is not genuine at all and that it might have been fabricated at the time of Muhammad bin Qasims invasion of Sindh in order to justify it. [1