The visit to the Blessed Rauda of RasoolAllah ﷺ is indeed a source of contentment for followers and a means of lessening the pain of grieving hearts which are aching out of love of their Beloved Prophet ﷺ . To appear in his court and seek forgiveness from Allah through his intercession is the way to have all our sins forgiven as Almighty Allah states in the Holy Quran:
وَلَوْ أَنَّهُمْ إِذ ظَّلَمُوا أَنفُسَهُمْ جَاءُوكَ فَاسْتَغْفَرُوا اللَّهَ وَاسْتَغْفَرَ لَهُمُ الرَّسُولُ لَوَجَدُوا اللَّهَ تَوَّابًا رَّحِيمًا
سورة النساء – الآية 64
“…and if they, when they have wronged their own souls, come humbly to you (O Prophet Muhammad – peace and blessings be upon him) and seek forgiveness from Allah, and the Noble Messenger intercedes for them, they will certainly find Allah as the Most Acceptor of Repentance, Most Merciful.”
(Surah Nisaa verse 64)
In this above verse
ving and Merciful One, has laid down three conditions to have our sins forgiven; firstly to appear in the court of RasoolAllah ﷺ , secondly seeking forgiveness from Allah and thirdly RasoolAllah ﷺ making dua for our forgiveness.
And of course this command was not only applicable while RasoolAllah ﷺ was physically in this world but to visit the Blessed Rauda of RasoolAllah ﷺ is like visiting him in person.
Thus the scholars have stated that this blessing continues even after the physical passing away of RasoolAllah ﷺ from this world.
Also because RasoolAllah ﷺ is always praying for the forgiveness of his Ummah 29 therefore if a sinner visits the Blessed Rauda of RasoolAllah ﷺ and seeks forgiveness then all his sins will certainlybe forgiven. (Seerat-e-Mustafa ﷺ)