Yaala bin Umaya reported,

Yala bin Umaya used to say to Umar bin Khattab , "I wish I could see the Prophet of Allah ﷺ at the moment when revelation descends upon him."Then, while the Prophet ﷺ was at Jiranah with a garment shading him, accompanied by some of his companions, Umar among them, a man came to him wearing a woolen cloak smeared with perfume.The man said, "Messenger of Allah, what do you say about a man who entered the state of ihram for Umra while wearing a cloak after having smeared himself with perfume?"The Prophet ﷺ looked at him for a moment and remained silent. Then revelation came upon him. Umar gestured with his hand to Yala bin Umaya, signaling him to come. Yala came forward and put his head under the garment, and there he saw the Prophet ﷺ with his face flushed red, breathing heavily for a while. Then the state passed from him.He said, "Where is the man who asked me about Umra earlier?"The man was sought out and brought to him.The Prophet ﷺ said, "As for the perfume on you, wash it off three times. As for the cloak, take it off. Then do in your Umra what you would do in your Hajj."

عن يعلى بن أمية

أنه كان يقول لعمر بن الخطاب رضي الله عنه ليتني أرى نبي الله ﷺ حين ينزل عليه، فلما كان النبي ﷺ بالجمرانة وعلى النبي ﷺ ثوب قد أظل به عليه معه ناس من أصحابه فيهم عمر، إذ جاءه رجل عليه جبة صوف متضمخ بطيب فقال: يا رسول الله كيف ترى في رجل أحرم بعمرة في جبة بعد ما تضمح بطيب؟ فنظر إليه النبي ﷺ ساعة ثم سكت، فجاءه الوحي فأشار عمر بيده إلى يعلى بن أمية: تعال فجاء يعلى فأدخل رأسه فإذا النبي ﷺ محمر الوجه يغط ساعة ثم سري عنه فقال: أين الذي سألني عن العمرة آنفا؟ فالتمس الرجل فجيء به فقال النبي ﷺ: أما الطيب الذي بك فاغسله ثلاث مرات، وأما الجبة فانزعها ثم اصنع في عمرتك ما تصنع في حجك.