what is the main common interests of the al-khaṭīb ash-shirbīniy and muhammad hussain najafi ?
SELECT DISTINCT var_uri where brack_open dbr_Al-Khaṭīb_ash-Shirbīniy dbp_mainInterests var_uri sep_dot dbr_Muhammad_Hussain_Najafi dbp_mainInterests var_uri brack_close