Hadithcore
Sunan an-Nasa'i, 3858
da’if· Darussalam

It was narrated from Al-Hasan that he disliked to hire a man without telling him what his wages would be.

أَخْبَرَنَا مُحَمَّدٌ، قَالَ أَنْبَأَنَا حِبَّانُ، قَالَ أَنْبَأَنَا عَبْدُ اللَّهِ، عَنْ حَمَّادِ بْنِ سَلَمَةَ، عَنْ يُونُسَ، عَنِ الْحَسَنِ، أَنَّهُ كَرِهَ أَنْ يَسْتَأْجِرَ الرَّجُلَ، حَتَّى يُعْلِمَهُ أَجْرَهُ‏.‏‏

References2 variants
In-Book Reference
Book 35b, Hadith 2
English Reference
Vol. 4, Book 35, Hadith 3889