Salam alaikum.

Here you can read some narrations from this “sahih” book.

And in this book it was reported that imam said:

و حـدثـنـى مـحـمـد بـن عـبـد الله بـن جـعـفر الحميرى ، عن ابيه ، عن يعقوب بن يزيد الانـبـارى ، عـن مـحـمـد بـن ابـى عـمـيـر، عـن زيـد الشـحـام ، عن ابى عبد الله عليه السلام قال : من زار قبر الحسين بن على عليه السلام يوم عاشوراء عارفا بحقه كان كمن زار الله فى عرشه

Whoever visited imam Hussein in the day of Ashura, (and) he knows his rights, he like visited Allah on His arsh”.

See this hadith in that book on-line.