Musnad Abu Ya'la al-Mawsili 243:55

Abu Bakr narrated to us, Husayn ibn Ali narrated to us, from Mujammi’ ibn Yahya, from Sa’id ibn Abi Burdah, from Abu Burdah, from his father, who said: We prayed the Maghrib [prayer] with the Messenger of Allah (may Allah bless him and grant him peace), then we said: "If only we were to sit until we pray the Isha [prayer] with him." He said: So we sat. Then he came out to us and said: "Are you still here?" We said: "Yes, O Messenger of Allah. We prayed the Maghrib with you, then we said we would sit until we pray the Isha with you." He said: "You have done well," or "You have done right." He said: Then he raised his head toward the sky—and he used to raise his head toward the sky often—and said: "The stars are a security for the inhabitants of the sky; when the stars depart, what is promised to the inhabitants of the sky will come to them. And I am a security for my companions; when I depart, what is promised to my companions will come to them. And my companions are a security for my nation; when my companions depart, what is promised to my nation will come to them."