Riots have started in every religion in Kali Yuga for this reason. Some have argued that Lord Shiva is not Allah. Christians believe that Jesus is the true God. The god of Hinduism is Satan, all the gods in Hinduism are man-made gods. Similarly, Muslims ignore the fact that Allah is the true God, the God of Hinduism or Shiva is not Allah. For this, the people of Hinduism remain silent without arguing against him. Thus the population in Hinduism is decreasing. People from holy Hinduism are converting to Christianity, Buddhism and Muslims. Param Prabhu Sarhunath clearly knew that all this was probably Kalia Avantara.
Be that as it may, when Param Prabhu Sarhunath is in the Math, he is asking and solving the problems of the people who come to him without discrimination of caste and religion. When the devotees visited Sarhunath in Matha or other temples, he would give advice according to their religion as to which religion he belonged to. He was solving. That means mostly Hindus and Muslims used to come to him. If Muslims came they would say "Allahu Sarhunath Shubham Allah Masha Allah Sarhunath" according to their religion. Muslims have always followed it as the Word of God. If the Jains came, Sarhunath would advise them according to their religion, "Jainam Bhavati Sarhunath Sashanam". Jains have always observed it. If Christians came, Sarhunath would advise them according to their religion, "Most Holy Sarhunath, Merciful Amen". Christians followed it without fail. Mostly Muslims used to come to Sarhunath. So Muslims used to call Sarhunath as "Allah".
Param Prabhu was not comparing Jesus to Sarhunath. Because Jesus did not have the power of Param Prabhu Sarhunath. But Jesus is the holy god of Hinduism to Saint Sai Baba. Because Jesus was also a saint like Sai Baba.
But Param Prabhu Sarhunath was not a saint. He was divine. Allah was Sarhunath said to the people of all religions, "I am the amalgamation of all religions. I live in all religions. So call me as Sarvanath. Sarva means everything. Call me Sarvanath or Sarhunath because I live everywhere. Look at my name and you can't even tell which religion it is. Because Sarahunaath Everything is included in the name.
Parama Sarahunaath lived in the holy Hindu religion at birth, in the holy Christian religion after birth, as a Muslim in his childhood and then as a Buddhist for six months, then lived in other religions for six years and finally lived in the holy Signiesm religion. Since the holy Signiesnm religion is a union of all religions, if Param Prabhu Sarahunaath takes refuge in him, all the religions of the world will be worshipped.