Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tirmidhi:821Qutaybah > Ḥammād b. Zayd > Ḥumayd > Anas

"I heard the Prophet saying: (Labbaika Bi'umratin wa Hajjah) 'Here I am for 'Umrah and Hajj.'"  

الترمذي:٨٢١حَدَّثَنَا قُتَيْبَةُ حَدَّثَنَا حَمَّادُ بْنُ زَيْدٍ عَنْ حُمَيْدٍ عَنْ أَنَسٍ قَالَ

سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ لَبَّيْكَ بِعُمْرَةٍ وَحَجَّةٍ قَالَ وَفِي الْبَابِ عَنْ عُمَرَ وَعِمْرَانَ بْنِ حُصَيْنٍ  

قَالَ أَبُو عِيسَى حَدِيثُ أَنَسٍ حَدِيثٌ حَسَنٌ صَحِيحٌ وَقَدْ ذَهَبَ بَعْضُ أَهْلِ الْعِلْمِ إِلَى هَذَا وَاخْتَارُوهُ مِنْ أَهْلِ الْكُوفَةِ وَغَيْرِهِمْ

See similar narrations below:

Collected by Aḥmad
ahmad:12870Yaḥyá > Ḥumayd > Anas

[Machine] I heard the Messenger of Allah ﷺ saying: "Here I am (at your service), responding to the call for 'umrah and hajj."  

أحمد:١٢٨٧٠حَدَّثَنَا يَحْيَى عَنْ حُمَيْدٍ قَالَ سَمِعْتُ أَنَسًا قَالَ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَبَّيْكَ بِعُمْرَةٍ وَحَجٍّ  

ahmad:14002Muḥammad b. Jaʿfar > Shuʿbah > Ḥumayd al-Ṭawīl > Anas

[Machine] I heard the Messenger of Allah ﷺ saying, "Labbaik (Here I am) for 'Umrah and Hajj together," or he said, "The Messenger of Allah ﷺ said..."  

أحمد:١٤٠٠٢حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ قَالَ أَخْبَرَنِي حُمَيْدٌ الطَّوِيلُ عَنْ أَنَسٍ قَالَ

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ لَبَّيْكَ بِعُمْرَةٍ وَحَجَّةٍ مَعًا أَوْ قَالَ قَالَ رَسُولُ اللهِ ﷺ