From Sahih Bukhari (Hadith 1570):
Narrated Jabir bin `Abdullah:We came with Allah's Messenger (ﷺ) (to Mecca) and we were saying: 'Labbaika Allahumma Labbaik' for Hajj. Allah's Messenger (ﷺ) ordered us to perform `Umra with that Ihram (instead of Hajj)
Reference: Bukhari 1570