Musannaf Ibn Abi Shayba 33:604

Abu Usama narrated to us, from Sa'id ibn Marzaban, who said: Muhammad ibn 'Ubayd Allah al-Thaqafi narrated to us, saying: I saw Ibn al-Zubayr addressing them, and he said: "Indeed, you have come from various lands seeking a great matter, so you must maintain good tranquility and sincerity of intention."