Sayyiduna Abdullah bin Amr (may Allah be pleased with him) narrates: On the occasion of the Farewell Pilgrimage, the Prophet Muhammad (peace be upon him) was standing in Mina for the people. People were asking you questions about issues. A man came to you and said: O Messenger of Allah (peace be upon him)! I did not know and I performed the sacrifice before the stoning. The Prophet Muhammad (peace be upon him) said: Now perform the stoning, there is no harm. (The narrator says:) That day, whenever anyone asked the Prophet Muhammad (peace be upon him) about doing something before or after its proper time, you would say: Now do it, there is no harm.
Hadith Referenceصحیح ابن حبان / كتاب الحج / 3877
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «صحيح أبي داود» (1758): ق.فضيلة الشيخ العلّامة شُعيب الأرناؤوطإسناده صحيح على شرط الشيخين