question #1 Sahih Muslim 974a, Book 11, Hadith 131 : What is the significance of visiting graves and praying for the deceased in Islam?

Peace be upon you, abode of a people who are believers. What you were promised would come to you tomorrow, you receiving it after some delay; and God willing we shall join you. O Allah, grant forgiveness to the inhabitants of Baqi’ al-Gharqad. Qutaiba did not mention his words:” would come to you”.