Hadith 8:16
Abu Bakr narrated to us, he said: Ibn Mahdi narrated to us, from Sufyan, from his father, from Abu Ya’la, that Al-Husayn ibn Ali met a group of people who were pilgrims. They said: "We intend to go to Mecca." He said: "Indeed, you are the delegation of Allah. So when you arrive in Mecca, gather your needs and ask them of Allah."
حدثنا أبو بكر قال ثنا بن مهدي عن سفيان عن أبيه عن أبي يعلى أن الحسين بن علي لقي قوما حجاجا فقالوا إنا نريد مكة فقال إنكم من وفد الله فإذا قدمتم مكة فاجمعوا حاجاتكم فسلوها الله