Prophet Muhammad SAW said: That If Allah SWT loves a person then naturally all of his creation will Love & respect that person. The Auliya Allah people love them whether they chose go to their graves or not, Muslims appreciate their work, like Khawaja Moinuddin Chisti, who converted 9 Million people into Islam and Hindus, Muslims, & Sikhs all pay their respects to him when they pass by his grave. Zakir Naik on the other hand is a show-off he is failing his deen because he is not doing for the sake of Allah SWT.