Shia scholar Muhammad Shirazi in his book “al-Baqiyah al-Garqad” (p 26) said:
Even their scholar(bin Baz) doesn’t visit mosque of messenger (sallalahu alaihi wa ali), and saying: As long as that Idol (Qubbah of Prophet) is there, I wouldn’t visit it..
There is no doubt that this is lie of shia scholar upon scholar of Islam, shaykh Bin Baz (rahimahullah).
Shaykh Bin Baz said:
Going to Madinah at any time with the intention of visiting the Prophet’s Mosque is a sunnah, as is performing salah in it, According to a hadith of the Prophet (may peace and blessing of Allah be on him), a salah performed in the Prophet’s Mosque is better than a thousand salats in any other place excepting the Sacred Mosque (Masjid al-Haram) in Makkah.
See: A Guide to Hajj, Umrah and Visiting the Prophet Mosque , chapter – Visitation Of The Prophets Mosque