מלכים א א:לט פירוש: רש״י

The horn of oil. [Tzadok took] of the anointment oil compounded by Moshe.³³See Shemos 30, 31.

From the Tent. Since the Holy Ark was in the City of Dovid [Yerusholayim], and the jug of oil of anointment was before the Ark. as we have learned in [Maseches] Yoma.³⁴ 52b.