بُلُوغُ الْمَرَامِ
Bulugh al-Maram 913
Business Transactions
وَعَنْ اِبْنِ عُمَرَ -رَضِيَ اَللَّهُ عَنْهُمَا- قَالَ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ أَعْطُوا اَلْأَجِيرَ أَجْرَهُ قَبْلَ أَنْ يَجِفَّ عَرَقُهُ } رَوَاهُ اِبْنُ مَاجَهْ [1] .
Narrated Ibn 'Umar (RA): Allah's Messenger (ﷺ) said: "Give the hired worker his wage before his sweat dries." [Reported by Ibn Majah].
Sunnah.com reference: Book 7, Hadith 165