The Book on Government
وَحَدَّثَنَا هَارُونُ بْنُ مَعْرُوفٍ، حَدَّثَنَا ابْنُ وَهْبٍ، أَخْبَرَنِي عَمْرُو بْنُ الْحَارِثِ، عَنْ أَبِي عَلِيٍّ، عَنْ عُقْبَةَ بْنِ عَامِرٍ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " سَتُفْتَحُ عَلَيْكُمْ أَرَضُونَ وَيَكْفِيكُمُ اللَّهُ فَلاَ يَعْجِزُ أَحَدُكُمْ أَنْ يَلْهُوَ بِأَسْهُمِهِ " .It has been narrated on the authority of Uqba b. Amir who said:I heard the Messenger of Allah (ﷺ) say: Lands shall be thrown open to you and Allah will suffice you (against your enemies), but none of you should give up playing with his arrows
From Sahih Muslim, whose reports the scholars accept as authentic.