Sahih Muslim , Book 33, Hadith 6403 (USC-MSA) ⓘ
This hadith has been transmitted on the authority of Jabir b. Abdullah with the same wording (and includes these words): " Allah's Messenger said: Every doer of deed is facilitated in his action."
حَدَّثَنِي أَبُو الطَّاهِرِ، أَخْبَرَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم بِهَذَا الْمَعْنَى وَفِيهِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " كُلُّ عَامِلٍ مُيَسَّرٌ لِعَمَلِهِ " .
also referenced under: Book 46, Hadith 14 (In-Book) & Hadith 2648 (Reference)