ENOfficial
‘Abdallah b. ‘Umar reported God’s Messenger as saying, “Give the hireling his wages before his sweat dries." Ibn Majah transmitted it.
Source: sunnah.com
Other translations
Arabic
وَعَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسلم: «أعْطوا الْأَجِيرَ أَجْرَهُ قَبْلَ أَنْ يَجِفَّ عَرَقُهُ» . رَوَاهُ ابْن مَاجَه
sunnah.com