Sahih Muslim 4897
The Book on Government
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ الْحَنْظَلِيُّ، أَخْبَرَنَا جَرِيرٌ، عَنِ الأَعْمَشِ، عَنْ أَبِي عَمْرٍو، الشَّيْبَانِيِّ عَنْ أَبِي مَسْعُودٍ الأَنْصَارِيِّ، قَالَ جَاءَ رَجُلٌ بِنَاقَةٍ مَخْطُومَةٍ فَقَالَ هَذِهِ فِي سَبِيلِ اللَّهِ . فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لَكَ بِهَا يَوْمَ الْقِيَامَةِ سَبْعُمِائَةِ نَاقِةٍ كُلُّهَا مَخْطُومَةٌ " .
It has been narrated on the authority of Abu Mas'ud al-Ansari who said A man brought a muzzled she-camel and said:It is (offered) in the way of Allah. The Messenger of Allah (ﷺ) said: For this you will have seven hundred she-camels on the Day of Judgment all of which will be muzzled
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.