Are Hinduism, Buddhism, and Sikhism religions?

Question:

There was a show on TV about the world of nature. This session was about India. In the introduction of the program, the host said: "Truly, India is called the land of religions. In it we find the Hinduism, Budhism, Sikhism, etc."

I want you to explain to me the following: Are the religions which the host mentioned true religions?
* Are they revealed and sent by Allah?

Answer:

Anything people uphold and a way of worship is called a religion, even if it is false such as Hinduism, Buddhism, or atheism, Judaism, Christianity, or any other false religions. Allah says in Surah Al-Kafirun:

You have your religion and we have ours.He called what the idolaters worship as a religion. But Islam is the only true religion. Allah says:
Verily, the (true) religion with Allah is Islam.

And He says:
And he who seeks a religion other than Islam, it will not be accepted from him, and in the Hereafter he will be among the losers.

And Allah says:
"This day, I have perfected your religion for you, and completed My favor upon you and have accepted for you Islam as religion". Islam is to worship Allah alone, obey His commands, refrain from whatever He forbids, do not cross the limits set by Him, and to believe everything Allah and His Messenger said about what was and what will be in the future. None of the false religions is revealed, nor approved by Allah. Rather, all of them are innovated. Islam is the religion of all the Messengers. It is only their laws that are different. Allah says:"To each of you we have assigned a law and
methodology".

Source:
Fatawa Islamiyah, Vol. 1 Pages 62-63-64